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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
When my kids were little, I would send them off to bed with a cup of chamomile tea. The steam and healing properties would clear up stuffy noses and congestion, its anti-inflammatory properties would sooth sore throats and body aches, and its tranquilizing properties would help them sleep without being groggy and cranky the next day. Chamomile tea is an age old remedy for many problems in gardens as well. Companion planting with chamomile is an even easier way to heal the garden.
What to Plant with Chamomile Chamomile tea is used to spray on seedlings to prevent damping-off, a fungal infection that kills many young plants. By companion planting with chamomile, its natural anti-bacterial and anti-fungal properties can help plants prone to fungus, mildew, mold, blight and other common plant ailments. Annuals susceptible to fungal problems, such as zinnias, petunias, snapdragons and verbena, as well as blight prone vegetables, like tomatoes and potatoes, can all benefit by having chamomile as their neighbor. Plant chamomile as a companion to perennials like: Bee balm Phlox Black eyed susan Lungwort Astilbe Bleeding heart Delphiniums Roses, lilacs, ninebarks and dogwood are a few shrubs/trees that also benefit from companion planting with chamomile.
Additional Chamomile Plant Companions Besides its anti-bacterial and anti-fungal benefits, chamomile improves the growth and flavor of many plants. Farmers have long used chamomile as a companion plant to apple and other fruit trees. Vegetable companions include: Cabbage Onions Beans Cucumbers Broccoli Kale Brussels sprouts Cauliflower Kohlrabi In the herb garden, chamomile pairs well with mint and basil, and is said to improve their taste and scent. Chamomile should be kept trimmed back so it stays full and healthy and does not get leggy and scraggly. While, of course, you’ll want to save some of these chamomile clippings for your own relaxing chamomile tea, also leave some in the garden as a calcium, magnesium and potassium boost for chamomile plant companions and to sow more chamomile seed. You can also spread clippings around any struggling plant to restore its vitality.
Chamomile plant companions can also benefit from the aphid and mite eating hoverflies, ladybugs and other beneficial insects that chamomile attracts; and you will benefit from its mosquito deterring scent.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Chamomile tea is a mild herbal tea often used for its calming effects and for its ability to calm mild stomach upsets. However, using chamomile tea for gardening may offer surprising benefits that most people haven’t considered. Here are three easy ways to use chamomile tea for gardening.
Chamomile Tea Uses in Gardens Chamomile flowers are not only attractive additions to the garden, but useful ones too. The plants are often utilized in the making of tea that many people find quite calming. But did you know this tea can be used for other stuff in the garden? Below are some interesting uses of chamomile tea for plants. Prevent damping off Prevention of damping off is probably the most common uses for chamomile tea in gardens. If you’re unfamiliar with the term, damping off is a common but extremely frustrating fungal disease that befalls seedlings. The tiny plants rarely survive, but instead collapse and die. To protect seedlings with chamomile tea, brew a weak solution of tea (The tea should be pale yellow). Mist the seedlings and the surface of the soil lightly three to four times per week, and then allow the seedlings to dry in the sunlight. Continue until the seedlings are sturdy enough to plant outdoors. Spray seedlings immediately if you notice a fuzzy white growth on the surface of the soil. Make a fresh batch of chamomile tea for plants every week or so.
Seed germination Chamomile tea contains tannins, which can promote seed germination by softening seed casings. Soaking seeds in chamomile tea will also help prevent damping off. To use chamomile tea for seed germination, brew a cup or two of weak tea, then allow the tea to cool until it feels slightly warm to the touch. Place the water in a bowl, then add the seeds and leave them until they begin to swell – generally eight to 12 hours. Don’t leave the seeds longer than 24 hours because they may begin to rot. Chamomile tea seed germination works best for larger seeds with hard outer coats, such as corn, beans, peas, squashor nasturtiums. Smaller seeds generally don’t require soaking, and can be extremely difficult to handle when wet.
Natural insecticide Using chamomile tea in the garden as a natural insecticide works well too, and when used properly, chamomile tea for plants has a low toxicity and doesn’t present a huge risk for bees and other beneficial insects. To use chamomile tea as a natural insecticide, brew a strong (triple strength) batch of tea and let it steep for up to 24 hours. Pour the tea into a spray bottle with a targeted sprayer. Use the tea to spray infested plants, but be careful not to spray the plant when bees or other beneficial insects are present. Also, don’t spray during the heat of the day or when the plant is in direct sunlight.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
There’s nothing like a soothing cup of chamomile tea. Not only does it taste good but chamomile tea has a number of health benefits as well. Plus, there is something so calming about the process of making tea from chamomile you’ve grown yourself. If you’ve never thought about growing your own chamomile tea plant for tea brewing, now’s the time. Chamomile is easy to grow and thrives in a variety of areas. Read on to find out how to grow chamomile for tea.
Chamomile Tea Benefits There’s no wonder that a cup of chamomile tea soothes the soul. Not only does it have mild sedative properties, but has been used for centuries for its anti-inflammatory, anti-bacterial, and anti-allergenic uses as well. Chamomile has also been used to treat stomach cramps, irritable bowels, indigestion, gas, and colic as well as menstrual cramps, hay fever, rheumatic pain, rashes, and lumbago. The herb has been used as a salve for hemorrhoids and wounds, and the steam inhaled to treat cold symptoms and asthma. Many people drink chamomile tea to reduce their anxiety and to aid in sleeping. Really, an amazing list of health benefits has been attributed to just one cup of chamomile tea.
Chamomile Tea Plant Info Chamomile comes in two types: German and Roman chamomile. German chamomile is an annual, bushy shrub that grows up to 3 feet (91 cm.) in height. Roman chamomile is a low growing perennial. Both produce similar aromatic blooms, but German is the more commonly grown for use in teas. Both are hardy in USDA zones 5-8. When it comes to growing chamomile for tea, either will work. German chamomile is native to Europe, North Africa and areas of Asia. It has been used since the Middle Ages and throughout ancient Greece, Rome and Egypt for a plethora of ailments. Chamomile has even been used to naturally lighten hair and the flowers can be used to make a yellow-brown fabric dye.
How to Grow Chamomile Tea Chamomile should be planted in a sunny location with at least 8 hours per day of direct sun, but not scorching sun. Chamomile will thrive in average soil and can be grown directly in the ground or in containers. Chamomile can be grown from nursery transplants, but it also germinates quickly and easily from seed. To sow seeds, prepare the planting area by raking it level and removing any weeds. The seeds are extremely tiny, so guard them from any gusts of wind or you will have chamomile everywhere. Scatter the seeds onto the prepared soil bed. It’s okay if the seeds aren’t evenly distributed since you will have too thin the bed soon anyway. Gently press the seeds into the soil with your fingertips. Don’t cover them; chamomile seeds need direct exposure to sunlight to germinate. Mist the planting area until damp. Keep the area damp during germination, which should take about 7-10 days.
Once the seedlings are up, you will notice that they are a bit crowded. It’s time to thin them. Choose seedlings that are weak looking to remove and space the remaining seedling at about 4 inches square (10 sq. cm.) apart from each other. Use scissors to snip those you are removing rather than pulling them from the soil. That way, you won’t be disturbing the roots of the remaining seedlings. Thereafter, the plants require almost no attention; just water them when they look droopy. If you scratch a little compost into the plot in the spring, they shouldn’t even need any fertilizer. If you plant chamomile in containers, however, it might benefit from a little organic fertilizer every third watering. In no time at all you will be making tea from your own homegrown chamomile which you can use either fresh or dried. When making tea from dried flowers, use about 1 teaspoon, but when brewing tea from fresh flowers, uses twice that amount.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Catnip plants (Nepeta cataria) can help make your garden a cat-friendly garden. The catnip herb is a perennial member of the mint family that is best known for being attractive to cats, but can also be used in soothing teas. Growing catnip is easy, but there are some things you need to know about how to grow catnip.
Planting Catnip Catnip can be planted in your garden either from seed or from plants. If you’re growing catnip from seed, you’ll need to properly prepare the seeds. Catnip seeds are tough and need to be stratified or slightly damaged before they will sprout. This can be done by first placing the seeds in the freezer overnight and then placing the seeds in a bowl of water for 24 hours. This process will damage the seed coat and will make it much easier for the catnip seeds to sprout. After you have stratified the seeds, you can plant them indoors or outdoors. Thin them to one plant per 20 inches after the sprout. You can also plant catnip from plant divisions or started plants. The best time for planting catnip starts or divisions is in either the spring or fall. Catnip plants should be planted 18 to 20 inches apart.
Growing Catnip Catnip herb grows best in well draining soil in the full sun, but will tolerate part sun and a wide variety of soil types. Once catnip plants are established, they need very little in the way of care. They don’t need to be fertilized, as fertilizer can decrease the potency of their smell and flavor. They only need to be provided with water beyond rainfall if you are growing catnip in pots or if you are having drought conditions.
Catnip can become invasive in some areas so you need to take steps to control it. Catnip plants spread readily by seed so in order to control its spread, you’ll need to remove the flowers before they go to seed. Growing catnip can be rewarding. Now that you know a few facts about how to grow catnip, you (and your cat) can enjoy this wonderful herb.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Cardamom (Elettaria cardamomum) hails from tropical India, Nepal and South Asia. What is cardamom? It is a sweet aromatic herb not only employed in cooking but also part of traditional medicine and tea. Cardamom is the third most expensive spice in the world and has a rich history of use in many countries as part of spice blends, such as masala, and as a crucial ingredient in Scandinavian pastries.
What is Cardamom? An interesting and crucial piece of cardamom information is that the plant is in the Zingiberaceae family, or ginger. This can be seen in the aroma and flavor. The many uses for cardamom have made it one of the most sought after of the spices. This forest dwelling plant is a perennial, which grows from large rhizomes. Cardamom spice can successfully be grown in United States Department of Agriculture zones 10 and 11. The cardamom plant is a 5- to 10-foot tall tropical plant that thrives in partial shade. The leaves are lance shaped and may grow up to two feet in length. Stems are rigid and erect, forming an inverted skirt around the plant. The flowers are tiny, but pretty, in either white with yellow or red but another form of the plant may also produce black white or red pods. The pods are crushed open to reveal tiny black seeds, the source of cardamom spice. Once the seeds are crushed, they release powerful aromatic oils with flavor reminiscent of ginger, clove, vanilla and citron.
Additional Cardamom Information Among the many uses for cardamom in the United States and several other countries is in perfume. It is also used in curries and other spice blends, crushed in Nordic breads and sweets, incorporated into tea and coffee, and even used in Ayurvedic medicine. As a medicinal, cardamom is traditionally used to treat insect and snake bites and as a cure for sore throats, oral infections, tuberculosis and other lung issues, as well as stomach and kidney ailments. It also has potential to help with mental depression and some say it is a powerful aphrodisiac. If you want to try growing cardamom to harness these possible benefits as well as its high manganese content, you will need to reside in a tropical climate with no freezing conditions or grow in containers that can be moved indoors.
Tips on Growing Cardamom As an understory plant, cardamom prefers humus rich soil, slightly on the acidic side. Sow seeds approximately 1/8 under fine soil and keep the medium evenly moist. Transplant to pots when you see two pairs of true leaves. Grow on outdoors in summer or year round in warm regions. Cardamom needs to stay moist and does not tolerate drought. In hot, arid regions, provide extra humidity through the leaves. Cardamom may flower 3 years after planting and the rhizomes can live for decades with good care. Move plants indoors at the end of summer in areas with freezing weather. Place indoor plants where they receive 6 to 8 hours of bright but filtered light. Transplant older plants every few years to prevent root binding. Cardamom is fairly easy to grow indoors but remember that mature plants can achieve up to 10 feet, so choose a location with plenty of space for the plant to stretch out into.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
What are capers and how are they used? Capers, unopened flower buds found on the caper bush, are the culinary darlings of many cuisines. Capers can be found in European foods and in those of Africa and India as well, where cultivation of growing capers is found. Growing a caper bush, however, is not an easy task.
What are Capers? Caper plants (Capparis spinosa) are usually found growing wild in the Mediterranean in dry stony areas similar to those where olives are grown. Capers grow in viney brambles, much like blackberries do in North America. Cultivation of a caper bush is most often found in Spain and Africa, but in the past, Southern Russia was also an exporter. Growing capers are, as mentioned, the buds of a shrub-like perennial (3 to 5 feet high) which has a multitude of spiny branches bearing 2-inch white flowers with purple stamens.
What are Capers Used For? So how are capers used? The tiny buds of the caper bush, or Capparis spinosa, are picked on a daily basis and then pickled in vinegar or otherwise brined in salt. The resulting flavor of the caper berry is strong and distinct–like that of mustard and black pepper–due to its concentration of mustard oil, which is released when the plant tissue is crushed. This piquant flavor and aroma lends itself well to a variety of sauces, pizza, fish meats and salads. The immature leaves growing on a caper bush may even be eaten as a cooked vegetable and the burnt remnants of the growing caper bush roots have been utilized as a salt substitute. Caper fruits (caperberry, capperone, or taperone) may be used in making caper-flavored sauces, or sometimes pickled for eating like small gherkins. A caper bush also has medicinal uses. Growing capers may be harvested to aid in eliminating flatulence, improving liver function, or for its anti-rheumatic effects. An age-old remedy, growing capers have also been reputed to be useful in treating arteriosclerosis, kidney ailments, diuretics, anemia, arthritis, gout and dropsy.
How to Grow Capers from Seed Growing a caper bush can be achieved via propagation from seed, although finding a seed source is more of a challenge. If seed for growing capers is located, one may try growing them in a large pot with a base of coarse rock or crumbled brick. Take care not to overwater as the plant’s foliage is a natural water conservator. Caper seeds are very tiny and germinate readily but in low percentiles. Dried seeds are more difficult to germinate and should be soaked for one day in warm water, then wrapped in damp towel, sealed in a jar and refrigerated for two to three months. Post refrigeration, re-soak seeds overnight and then plant at a depth of 1 cm in well drained medium. How to Grow Capers from Cuttings Collect growing caper berry cuttings in February, March or April using basal portions with six to 10 buds. For growing a caper bush, seat cuttings in a loose, well-draining soil medium with a heat source at the base. Dipping the stem cutting in a bit of rooting hormone first is also beneficial.
Caring for Caper Plants Caring for caper plants requires a steady stream of strong sunlight and an arid climate. Growing caper plants have a hardiness range similar to olive trees (18 degrees F. or -8 degrees C.) and can also tolerate summer temperatures of over 105 degrees F. (41 degrees C.). When growing a caper bush, the plant itself is quite tolerant and develops deep root systems, the better to avail itself of its resources in a difficult environment. When harvesting, size matters. Growing capers are divided into five distinct groups. When growing a caper bush, buds are picked at the immature stage and categorized according to size: nonpareils, capuchins, capotes, seconds, and thirds—with the nonpareils being the most prized — and most expensive. In Italy, capers are graded on a scale from 7 to 16, which indicates their size in millimeters.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Combining uses for plants in the garden brings a utilitarian and beautification aspect to the landscape. An example might be planting culinary or medicinal herbs that also bloom or have appealing foliage. Bupleurum is an excellent plant for such use. What is bupleurum? It is a plant with a long history as an Asian herbal medicine and is a lovely foil for many other types of plants. Growing bupleurum in the garden bed brings in traditional natural medicine paired with unmatched annual color.
What is Bupleurum? Although bupleurum is from Asia, it can’t really be classed as a cool season or warm season annual. The plant is hardy in United States Department of Agriculture zones 3 to10, a pretty broad spectrum for a leafy herb. Most gardeners across North America and beyond can learn how to grow bupleurum and keep a ready supply of this useful herb on hand, either fresh or dried. Once a common name among Chinese herb plant info, Bupleurum gibraltaricum, or hare’s ear, grows readily from seed. It can be recognized by bluish-green foliage which resembles eucalyptus leaves. The flowers are useful in a cut garden and arrive in yellowish green umbels. Most species grow about 24 inches tall (61 cm.) with a 12-inch spread (30.5 cm.). Although the plant is generally considered to be annual, it can be a short-lived perennial in frost-free zones. The plant has a dense, compact habit that contrasts nicely with other herbs or when added to the cut flower garden. The herb blooms from mid-summer all the way into fall and the first frost. Bupleurum is closely related to fennel, dill and other umbel-forming plants.
Chinese Herb Plant Info Unless you are a long-time herbalist or licensed practitioner of herbal medicine, it is inadvisable to try to medicate yourself with this herb. However, it has been used for centuries to relieve such problems as arthritis, menopause, skin ailments, some ulcers and mental disorders. It has even been found to have use calming the withdrawal of steroid use. Much of the plant’s power comes from the high level of saponins found concentrated in the roots. Expert advice warns against side effects such as dizziness and headaches. Most of us wouldn’t be growing bupleurum for such uses, but it is nonetheless an attractive addition to any landscape situation.
How to Grow Bupleurum Seed germination can be capricious, but starting the herb from seed is the most common method. Sow seed in a well-draining, prepared garden bed when soil temperatures are at least 60 degrees Fahrenheit (16 C.). Surface sow and cover with a light dusting of soil. Keep moderately moist until germination, usually in 14 days. Thin plants until they are spaced 12 inches apart (30.5 cm). In frost free zones, divide the plant in spring. Bupleurum needs little extra food and has few insect and pest issues. As a cut flower it lasts for 7 to 10 days. This lovely plant is underused but care of bupleurum plants is relatively easy and low maintenance. Disclaimer: The contents of this article is for educational and gardening purposes only. Before using ANY herb or plant for medicinal purposes, please consult a physician or a medical herbalist for advice.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
You’ve probably heard about black cohosh with respect to women’s health. This interesting herb plant has much to offer for those wishing to grow it. Keep reading for more information on black cohosh plant care.
About Black Cohosh Plants Found in the eastern United States, black cohosh plants are herbaceous wildflowers with an affinity for moist, partially shaded growing areas. Black cohosh is a member of the Ranunculaceae family, Cimicifuga reacemosa, and commonly referred to as black snakeroot or bugbane. Growing black cohosh gets the name ‘Bugbane’ in reference to its unpleasant odor, which renders it repellent to insects. This wildflower has small plumes of star-shaped white flowers that soar upwards of 8 feet (more commonly 4 to 6 feet tall) above deep green, fern-like leaves. Growing black cohosh plants in the home landscape will definitively lend some drama due to its spectacular height and late summer blooms. Black cohosh perennials have foliage similar to that of astilbe, sharply serrated, and show themselves off nicely in shade gardens.
Black Cohosh Herb Benefits Native American people once used growing black cohosh plants for a medley of medical issues, from snake bites to gynecological conditions. During the 19th century, physicians availed themselves of black cohosh herb benefits with regards to fever reduction, menstrual cramping, and arthritis pain. Additional benefits deemed the plant useful in the treatment of sore throats and bronchitis. Most recently, black cohosh has been utilized as an alternative medicine in the treatment of menopausal and premenopausal symptoms with a proven “estrogen-like” balm to reduce disagreeable symptoms, most especially hot flashes and night sweats. The roots and rhizomes of black cohosh are the medicinal portion of the plant and will be ready for harvesting three to five years after planting.
Black Cohosh Plant Care In order to plant black cohosh in the home garden, either purchase seeds from a reputable nursery or collect your own. To collect seeds, do so in the fall when the seeds are mature and have dried out in their capsules; they will have started to split open and when shaken make a rattling sound. Sow these seeds immediately. Seeds for growing black cohosh plants must be stratified or exposed to a warm/cold/warm cycle to stimulate germination. To stratify the black cohosh seeds, expose them to 70 degrees F. (21 C.) for two weeks, and then 40 degrees F. (4 C.) for three months. Once the seeds have gone through this process, plant them 1 ½ to 2 inches apart and about ¼ inch deep in prepared moist soil that is high in organic matter and covered with a 1-inch layer of mulch. Although this herb prefers shade, it will grow in full sun; however, the plants will be of a lighter shade of green and may have more of a propensity for scalding of the foliage. You may want to sow seeds in a cold frame for germination the following spring if you have a particularly hostile climate. Black cohosh may also be propagated via division or separation in the spring or fall but not sooner than three years after planting. Maintain a consistently moist soil for your black cohosh plants, as they dislike drying out. Additionally, tall flower stalks may likely need staking. These perennials are slow growers and may require a little patience but will lend visual interest in the home landscape. Even the spent seed casings may be left throughout the winter to add texture to the garden.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Growing bay leaf trees have been cultivated for centuries for their subtle flavor, aroma and medicinal uses. Sweet bay leaf spots may make one cringe regarding the wisdom of using them in culinary creations such as soups, stews, brines, shellfish boils and teas let alone for ornamental uses such as herbal wreaths, topiaries or potpourri. So let’s take a look at the causes and care of bay leaf tree problems, such as black spots on bay leaves.
Bay Leaf Tree Care Growing bay leaf trees require a little patience as they are slow growing evergreens, although they may live for 40 years or longer and attain a height of 10 feet (or up to 23 feet in the wild). Care of bay leaf trees is minimal when bearing in mind that Laurus nobilis is hardy in USDA zone 8, thrives in rich, well-drained soil (pH 6.2), dislikes overwatering and should be brought indoors when the temperature dips in the fall months.
Sweet Bay Leaf Spots by Insects A plague in the care of bay tree leaf problems are aphids, mites and hard shelled scales. Their honeydew causes sooty mold, giving the appearance of black spots when growing bay leaf trees. Care of bay tree leaf problems of this ilk require a strong blast of water to dislodge some of the marauders, followed by a treatment of insecticidal soap or neem oil. Both insecticidal soap and neem oil are safe to use and can be easily rinsed off the leaves before using in food. Several weekly applications may be needed to resolve black spots on bay leaves caused by insects.
Other Causes of Black Spots on Bay Leaves If no evidence of insects is to be found, another cause for black spots on bay leaves may be leaf spot disease. Care of bay tree leaf problems caused by this involve primarily removing all the affected leaves and allowing the soil to dry between watering. Make sure the plant is not sitting in water and water at the base of the plant to allow leaves to remain dry. A bacterial or fungal infection such as phytophthora ramorum may additionally be creating sweet bay leaf spots. Care of bay leaf tree problems of this type again involves removing any infected leaves from the plant and surrounding area and burn or seal in a plastic bag for dispatch. Take care to have leaves dry by mid morning, thereby discouraging a hospitable environment for spores to take hold. A sulfur spray may discourage any further infection and black spots on bay leaves. Although chemical control is not usually warranted, if you do decide to spray, spring is the optimal time at bud break during the growing season in 12 to 14 day intervals. Lastly, a possible cause of black spots on bay leaves may simply be sunburn. Moving the plant from indoors back outside too suddenly may burn the leaves as may a reflection from glass indoors. Always look into the simplest solution first such as too much sun or water or the need for repotting.
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Dummer. ゛☀
2017年08月25日
Dummer. ゛☀
Bay trees are grown all over the world for the leaves, which are used in cooking, massage therapy and for medicinal properties. Though fairly resistant to pests and disease, problems may nonetheless strike, causing the leaves to turn yellow on the bay laurel. You may be wondering why my bay laurel is turning yellow if you see yellowing of the bay laurel leaves. Bay trees are evergreen shrubs that grow beautifully in either the garden or in containers. They make wonderful topiaries shaped as balls, pyramids, or “lollipops” and may even have braided or spirally trained stems. Laurus nobilis prefers to be grown in well-drained soil in a partially shaded or protected sun exposure. Grow bay outside in warm climates or indoors or greenhouse in cooler climates.
Why is My Bay Laurel Turning Yellow? Leaves turn yellow on bay laurel for a number of reasons, resulting from an environmental condition, pest infestation or disease. Root rot – A yellow bay laurel plant may be indicative of waterlogged roots or wet weather creating root rot, a fungal disease that does exactly what is says. This usually applies to container grown plants and symptoms also include leaf wilt and drooping as well as yellow leaves. Avoid overwatering and standing water by providing adequate drainage. You may need to repot the bay in well draining, disease-free soil after removing any infected parts. An application of fungicide may be helpful as well.
Bay sucker pest – If your bay laurel has yellow leaves, another cause may be the bay sucker (aka: jumping plant lice), a common insect marauder of bay plants. These sap suckers are most active in late spring. Early signs of these pests are yellowing of the leaves followed by thickening of the leaf tissue, and finally brown leaves that drop. Treatment for these pests is the removal of infested foliage on the yellow bay laurel plant. The damaged portions should be burned and then the bay should be treated with insecticidal soap focused on the underside of the leaves. You may need to treat more than one time. Nutrient deficiency – Lastly, if your bay laurel has yellow leaves, the root of the problem may be either an iron or a nitrogen deficiency.
A deficiency in iron is also called iron chlorosis and is a major issue in the garden that is caused by several problems, most often overly alkaline soil or damaged roots. Too little iron decreases chlorophyll, resulting in yellow leaves beginning at the edges and moving inward while the veins remain green. Treatment is dependent upon the cause. If the soil is too wet or alkaline, mix organic matter, sulfur or peat moss into the soil to correct the pH and improve drainage. A yellow bay laurel plant may be indicative of a nitrogen deficiency, which is caused by an imbalance in the pH of the soil. A uniform yellowing of the bay laurel leaves occurring in older, lower leaves first and moving upward is how a nitrogen deficiency can be diagnosed. Add a nitrate rich fertilizer to the soil, making sure to follow the directions lest you scorch the plant. A safer but slower option is to amend with decomposing organic matter to treat the nitrogen deficiency.
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