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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
The piney scent of a rosemary plant is a favorite of many gardeners. This semi hardy shrub can be grown as hedges and edging in areas that are USDA Plant Hardiness Zone 6 or higher. In other zones, this herb makes a delightful annual in the herb garden or can be grown in pots and brought indoors. Because rosemary is such a wonderful herb, many gardeners want to know how to propagate rosemary. You can propagate rosemary from either rosemary seeds, rosemary cuttings or layering. Let’s look at how.
Step-by-Step Instructions Stem Cutting Rosemary Rosemary cuttings are the most common way in how to propagate rosemary. Take a 2- to 3-inch cutting from a mature rosemary plant with a clean, sharp pair of shears. Rosemary cuttings should be taken from the soft or new wood on the plant. The soft wood is most easily harvested in the spring when the plant is in its most active growth phase. Remove the leaves from the bottom two-thirds of the cutting leaving at least five or six leaves. Take the rosemary cuttings and place it in a well draining potting medium. Cover the pot with a plastic bag or plastic wrap to help the cuttings retain moisture. Place in indirect light. When you see new growth, remove plastic. Transplant to a new location.
How to Propagate Rosemary with Layering Propagating a rosemary plant through layering is much like doing so through rosemary cuttings, except the “cuttings” stay attached to the mother plant. Choose a somewhat long stem, one that when bent over can reach the ground. Bend the stem down to the ground and pin it to the ground, leaving at least 2 to 3 inches of the tip on the other side of the pin. Strip away the bark and leaves that are 1/2 inch on either side of the pin. Bury the pin and the bare bark with soil. Once new growth appears on the tip, cut the stem away from the mother rosemary plant. Transplant to a new location.
How to Propagate Rosemary with Rosemary Seeds Soak seeds is warm water overnight. Scatter across the soil. Cover lightly with soil. Germination may take up to three months
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
A lot of people enjoy having small kitchen window sill plants like rosemary. However, although they are easy to grow, they aren’t without faults. Often, you’ll find there are problems with growing rosemary, one of them being a common fungus.
Powdery Mildew on Rosemary Perhaps you’ve noticed a white powder on your rosemary plants in your kitchen. If so, you aren’t alone. The white powder is actually powdery mildew on rosemary, a common plant ailment. It is caused by many different fungi that are closely related. This is one of the most common problems with growing rosemary plants, and all indoor plants actually. Each indoor plant has a white powdery mildew that is specific to that particular plant. Rosemary is no different. Powdery mildew won’t kill the rosemary plant, but it will weaken it. This is one of the easiest plant diseases to diagnose. Powdery mildew appears as a white powder on rosemary, which coats the leaves of the plant. The powder is actually thousands of little spores and can spread to other plants if severe enough.
How to Get Rid of Powdery Mildew on Rosemary Powdery mildew can be partially removed if you rub the leaves of your rosemary plant carefully. If you don’t try to remove some of it, the white powder on rosemary can result in leaf drop. The powdery mildew on rosemary can rob the plants of the nutrients they need to grow. Powdery mildew on rosemary can definitely make the plant look a little ragged, but it shouldn’t kill it. Pick up any infected leaves that have fallen off the plant. Also, take infected plants out of high humidity rooms, like the bathroom or kitchen. Finally, spraying the white powder on rosemary with a fungicide such as neem oil will help to kill the fungus. You might want to try spraying water on it first every few days to knock the mildew off before resorting to fungicide. You may need to repeat this every few days for it to be effective, but be careful not to overwater the plant itself or you will end up with root rot, another of the common problems for rosemary plants or other indoor houseplants.
Preventing Powdery Mildew on Rosemary One of the best ways to treat white powder on rosemary is to prevent it in the first place. Even if you still have an outbreak, with a few precautions beforehand, the powdery mildew will not have as good a stronghold, making it’s treatment even easier. When it comes to the prevention of powdery mildew, the use of bicarbonates seems promising, at least for many people. Since powdery mildew fungus thrives in moist, humid conditions, ensure that your plant has plenty of light and well-draining soil. Only water the plant as needed to avoid overly saturated soil and keep the water off the foliage. Keep your rosemary plants well ventilated too, meaning do not overcrowd them with other plants. This only creates a moist environment for the fungus to thrive in. Oftentimes, powdery mildew attacks new growth, so avoiding excessive use of nitrogen fertilizers should help limit this growth. Purchasing plants that are resistant to the disease, whenever available, is a good idea too. Now that you know what the white powder on rosemary is, and how to treat or prevent it, you can go back to enjoying your rosemary plant.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Rosemary is a popular culinary herb in the home garden. It can be planted either in the ground or in containers, but depending on how you grow this herb, how you water your rosemary plant differs.
How to Water a Rosemary Plant in the Ground Rosemary is a plant that is easy to grow in the ground, mostly because it rather drought tolerant. A newly planted rosemary plant needs to be watered frequently for the first week or two to help it become established, but after it has been established, it needs little in the way of watering other than rainfall. Rosemary is drought tolerant and can go quite some time without being watered when planted in the ground. In fact, often what will kill a rosemary plant growing in the ground is too much water, and rosemary is very sensitive to drainage. It doesn’t like to grow in soil that doesn’t drain well and can succumb to root rot if left in soil that stays too wet. Because of this, you should make sure to plant your rosemary in well draining soil and after it is established, then only water in times of severe drought.
Watering Rosemary Plants in Containers While rosemary grown in the ground needs little water from the gardener, rosemary grown in containers is another matter. A rosemary plant in a container doesn’t have the chance to grow the extensive root system to seek out water like the plants in the ground. Because of this, they are far less drought tolerant and need to be watered frequently. But, like ground-planted rosemary, those grown in containers are also sensitive to drainage.
With container-grown rosemary, water the plant when the soil is just dry to the touch on the top. It’s important that you don’t let the soil dry out completely as rosemary plants lack signals like droopy leaves or wilted stems to let you know they are dangerously low on water. They can actually die before you realize there was ever a problem. Therefore, always keep the soil of your potted rosemary at least a little moist. On the flip side, make sure the pot has excellent drainage. If the soil becomes too wet, the plant can easily develop root rot and die.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Growing rosemary indoors is sometimes a tricky thing to do. Many good gardeners have tried, and despite their best efforts, end up with a dry, brown, dead rosemary plant. If you know the secrets to proper care of rosemary plants growing inside, you can keep your rosemary plants growing happily indoors all winter long.
Tips for Growing Rosemary Indoors Most often, there are four things on the list of what kills rosemary plants indoors. These are: lack of sunlight poor watering practices powdery mildew pests If you can avoid these issues, your rosemary plant will live happily inside. Let’s look at how to avoid each. Lack of Sunlight Most people aren’t aware that the lack of sunshine is the most common reason for a rosemary plant growing indoors to die. Often, rosemary plants are brought indoors without any acclimation. They go from six to eight hours of strong, direct light to four to six hours of weak or indirect light. The rosemary plant is unable to produce enough energy to stay alive on this amount of weak light and simply dies. The first step to preventing rosemary light starvation is to put your rosemary on a sunlight diet before you bring it indoors. Several weeks before you plan on bringing the rosemary inside, move the plant to gradually shadier areas of your yard. This will force the rosemary plant to grow leaves that are more efficient at turning light into energy, which will help it cope with weaker indoor light when it moves inside. Once your rosemary moves indoors, make sure that you place it in the brightest window in your house, which is normally a south facing window. If your rosemary plant is not getting at least six to eight hours of light a day, place a lamp with a fluorescent light bulb as close as possible to the plant to supplement the sunlight.
Poor Watering Practices The second most common reason for an indoor rosemary dying is watering practices. Often, indoor rosemary plants are watered too little or too much. Make sure that the drainage on the container with the rosemary is excellent. Only water the soil when the top of the soil is dry to the touch. But, that being said, never let the soil dry out completely. In the winter, rosemary plants grow much more slowly and need much less water than they do in the summer. Watering too often will cause root rot, which will kill the plant. On the other side, if the soil of the rosemary plant is allowed to dry out completely, the roots will die back and the plant will not have enough roots to support itself.
Powdery Mildew Indoors or outdoors, rosemary plants are very susceptible to powdery mildew. Most homes don’t have the same air circulation as the outside world does, which makes this an even worse problem for the plant inside. The best way to drive away powdery mildew on rosemary plants is to increase the air circulation around it. Letting a fan blow on it for a few hours a day or taking it out of more high humidity rooms like the bathroom or kitchen, will help improve the air circulation. You can also treat the plant with a fungicide to help keep away the powdery mildew. Pests To be honest, while pests may get the blame for killing a rosemary plant, most pests will only infest a plant that is already weakened. Unfortunately, most rosemary growing indoors, despite all best efforts, are growing in a somewhat weakened state. The stricter you are with yourself about making sure that your rosemary plant is watered properly and gets enough light, the less likely pests will bother the plant. But, if your rosemary is infected with pests, use a houseplant pesticide to remove them. Since rosemary is an herb and it is mainly grown to be eaten, look for organic pesticides. One that is growing in popularity is neem oil, as it is very effective against pests but is completely harmless to humans and pets.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
While pruning a rosemary plant is not needed to keep a rosemary healthy, there are several reasons why a gardener might want to prune a rosemary bush. It may be that they want to shape the rosemary or reduce the size of the rosemary shrub or to create a more bushy and productive plant. Whatever your reasons for wanting to prune your rosemary, there are a few things you need to know about how to prune a rosemary bush.
When to Prune Rosemary Rosemary pruning can be done anytime during the spring or summer up until four to six weeks before the first frost. Pruning rosemary after this time, or in the fall and winter, can cause the rosemary shrub to focus on growing new, tender growth rather than hardening off and protecting the growth that it has. If a rosemary bush does not harden itself off, it will be more susceptible to winter damage which can kill it.
Tips for How to Prune a Rosemary Bush Before you prune your rosemary bush, make sure that your pruning shears are sharp and clean. Blunt or dirty pruning shears can result in ragged cuts that can leave the rosemary plant vulnerable to bacteria and pests. The next step in how to trim rosemary bushes is to decide why you want to trim the plant. If you are trimming the rosemary to shape it, say as a hedge or a topiary, draw a mental picture of what you would like the plant to look like and trim away the branches that do not fall into that outline. If your shaping needs to remove more than one-third of any branch, you will need to prune the rosemary back in stages. You can prune back branches by one-quarter, but you will need to give them a season to recover before pruning again.
If you are doing rosemary pruning simply to create a busier plant, you can remove the end one to two inches of the branches. This will force the branch to split and will create a bushier plant. This technique is particularly helpful if you are growing rosemary for cooking, as this creates more foliage in a more compact space. You may also find that your rosemary plant is in need of some rejuvenation. Find tips for this here: Rejuvenating Rosemary Plants. The steps for how to prune a rosemary bush are simple but important. Knowing how to trim rosemary bushes properly will help you keep your rosemary happy and manageable.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Rosemary is a hardy,evergreen herb that is vigorous and fragrant. The needle-like foliage is full of aromatic oils that release in stews, soups and sauces. Drying rosemary can help capture that aroma and the flavor. Harvesting rosemary in summer for drying protects the essence of the plant and brings it conveniently to your spice rack.
Harvesting Rosemary Tips on how to dry rosemary must include a talk on timing. Most herbs are best just before flowering when the oils are at their peak. Cut the stems in the morning just after the dew dries and before the heat of the day is at its height. Use pruners when harvesting rosemary from mature plants with woody stems. Wash the stems before you begin drying rosemary.
How to Dry Fresh Rosemary Fresh rosemary is easiest to use because the leaves are soft and pliable. It’s easy to preserve the flavor of the herb but drying rosemary makes the leaves hard and woody. The process of how to dry rosemary can include grinding the dry needles into powder for use without the hard texture. You can just leave a stem of rosemary on the counter and it will dry, but to ensure safety and quality, a food dehydrator is useful. Dry the stems in a single layer on the dehydrator trays. Pull off the leaves after they are dry and store rosemary whole or ground. Other methods of how to dry rosemary can be done by hanging on a clothes hanger or pulling off the leaves and letting them dry in a single layer on a cookie sheet. A pretty and easy way of drying rosemary is to make tied bouquets. The herb is attractive with numerous leaves and a rich green color. When bundled and tied with a bright ribbon, the bouquet emits a fresh evergreen scent as it dries. Hang the bundles in a warm, dry area until the needles start to fall off, then remove the leaves by rubbing the stem upwards over a bowl or bag.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Rosemary’s fragrance floats on the breeze, making homes near plantings smell clean and fresh; in the herb garden, rosemary can double as a hedge when the right varieties are selected. Some rosemary varieties are even suitable as indoor potted plants, provided they get to spend the summer sunbathing on the patio. These tough, flexible plants seem almost bulletproof, but when brown rosemary plants appear in the garden, you may wonder, “Is my rosemary dying?” Although brown rosemary needles aren’t a particularly good sign, they are often the only early sign of root rot in this plant. If you heed their warning, you may be able to save your plant.
Causes of Brown Rosemary Plants There are two common causes of rosemary turning brown, both caused by environmental problems that you can easily correct. The most common is root rot, but a sudden shift from the very bright light on a patio to the comparatively darker interior of a home can also cause this symptom. Rosemary evolved on the rocky, steep hillsides of the Mediterranean, in an environment where water is available for only a short period before it rolls on down the hill. Under these conditions, rosemary never had to adapt to wet conditions, so it suffers terribly when planted in a poorly-draining or frequently over-watered garden. Constant moisture causes rosemary roots to rot, leading to brown rosemary needles as the root system shrinks. Increasing drainage or waiting to water until the top 2 inches of soil are dry to the touch is often all these plants need to thrive.
Potted Rosemary Turning Brown The same watering policy for outdoor plants should hold for potted rosemary — it should never be left in a saucer of water or the soil allowed to remain wet. If your plant isn’t over-watered but you’re still wondering why rosemary has brown tips, look to recent changes in lighting conditions. Plants that move indoors before the last frost may need more time to adjust to the lower amounts of available light.
When moving rosemary from the patio, start earlier in the season when indoor temperatures and outdoor temperatures are similar. Bring the plant inside for a few hours at a time, gradually increasing the time it stays inside during the day over a few weeks. This gives your rosemary time to adjust to indoor lighting by producing leaves that are better at absorbing light. Providing supplemental light can help during the adjustment period.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
It’s Christmas time again and maybe you are looking for another decorating idea, or you live in a small apartment and just don’t have the room for a full size Christmas tree. Of late, rosemary Christmas trees plants have become popular nursery or grocery store items. Not only is rosemary used as a Christmas tree a festive ornamental for the season, but it is predominantly disease and pest resistant, aromatic, a culinary treasure, and responds beautifully to pruning to maintain the shape. Additionally, a rosemary tree for Christmas can be planted in the garden to wait the following holiday season while maintaining its role as an indispensable herb.
How to Create a Rosemary Tree for Christmas With the burgeoning popularity of rosemary as a Christmas tree, you can easily purchase one for use during the holidays. However, if you have a bit of a green thumb, it’s also fun to know how to create a rosemary tree for Christmas. If you aren’t a big fan of rosemary, other herbs such as Greek Myrtle and Bay Laurel are also suitable for small living Christmas trees. Initially, the purchased rosemary tree has a lovely pine shape but over time as the herb matures, it outgrows those lines. It is very easy to prune the rosemary to help it maintain its tree shape. Take a picture of the rosemary Christmas tree, print it out and draw an outline of the tree shape you wish the herb to have with a permanent marker. You’ll notice that outside of the marker lines there are branches. These are the branches that need to be pruned back to regain the tree shape. Use your photo as a template to show you where to prune, clipping the branches all the way to their base near the trunk of the rosemary. Don’t leave nubs, as this will stress the herb out. Continue to prune every three to four weeks to maintain the desired shape.
Care for a Rosemary Christmas Tree Keeping a rosemary tree for Christmas is extremely simple. Continue with the pruning schedule and mist the herb after pruning. Keep the plant in a sunny window or outside in full sun. Keeping rosemary for Christmas healthy requires regular watering. Rosemary plants are drought tolerant, but this doesn’t mean they need no water. It is difficult to tell when to water rosemary as it doesn’t wilt or drop leaves as other plants do when in need of water. The general rule is to water every week or two.
The rosemary Christmas tree will have to be repotted at some point or planted outdoors until the following Christmas. Keep shaping the plant from spring through fall and then bring indoors again. Repot in a larger clay pot to aid in water retention with a lightweight potting mix that provides good drainage.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Given the right conditions, rosemary plants thrive, eventually reaching heights of 6 to 8 feet. They grow out as well as up, sending out stems that seem determined to explore their surroundings and invade the space of adjacent plants. If your rosemary plant has grown out of control, it’s time to take drastic action. Rejuvenation pruning of rosemary may be needed.
Can You Hard Prune Rosemary? Gardeners are sometimes hesitant to make drastic cuts on rosemary shrubs because a few herbs with similar, woody stems don’t recover if you make severe cuts. A mature rosemary plant, however, tolerates this drastic pruning, even into the woody parts of the stem. You can do light pruning and harvesting any time of year, but a rosemary plant responds best to hard pruning in winter when it isn’t actively growing. When pruned in winter, the plant grows back in spring looking better than ever. Read on to find out how to rejuvenate a rosemary shrub. Note: For most people who grow rosemary, the plant will go through a cold period. It isn’t a good idea to prune any herb, rosemary or otherwise, shortly before or during cold because it will cause the plant to grow new shoots, which are very vulnerable to cold damage. In warmer areas where rosemary is more apt to grow to the size in which rejuvenation pruning is needed, the plant is not experiencing the same killing cold, so winter pruning while it’s in dormancy is best. That being said, for those of us NOT living in such areas, stick to spring pruning after the threat of frost has passed.
Rejuvenating Rosemary Plants The first step in rejuvenating rosemary plants is to determine the size at which you want to maintain the plant. Cut the shrub back to about half of the desired size, and by the end of spring it will fill the allotted space. You can maintain the size of the shrub through summer with light pruning and harvesting. Cutting through the thick, woody parts of the stem on a mature rosemary shrub may be too much for your hand pruners. If you find the stems hard to cut, use loppers with long handles. The length of the handles gives you more leverage and you’ll be able to make the cuts easily. When tender new shoots replace the old growth, you’ll be able to make cuts easily with hand pruners. Don’t toss the prunings on the compost pile! Save the best tips to start new plants, and strip the needles off the remaining stems for drying. The tough stems make excellent kabob skewers.
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Dummer. ゛☀
2017年08月24日
Dummer. ゛☀
Rosemary is a magnificent fragrant herb that is native to the Mediterranean. During the Middle Ages, rosemary was used as a love charm. While most of us enjoy the aroma of fresh rosemary, today most people grow it for its culinary uses and ornamental qualities. There are several easy to care for varieties in this family of Lamiaceae, one of which is the creeping or prostrate rosemary plant (Rosmarinus officinalis “Prostratus”). So, what is creeping rosemary, and is prostrate rosemary suitable for your landscape?
Creeping Rosemary Information Prostrate rosemary in the landscape is an easy to care for creeping perennial herb suitable for the herb garden, perennial beds, containers, and rockeries. A low growing herbaceous shrub, prostrate rosemary plants can be grown throughout USDA Plant Hardiness Zones 8 to 10. The plant only grows to a height of about 2 inches to 1 foot tall (5-30 cm.) and will spread 4 to 8 feet (1.2-2.4 m.) if left unchecked. The best time to plant prostrate rosemary is in the fall. Plant your creeping rosemary (Rosmarinus officinalis ‘Prostratus’) in full sun to part shade in well draining soil, although it will do well in almost any type of soil so long as it is not allowed to become sodden. You will be rewarded with an aromatic evergreen with gray green leaves reminiscent of pine needles and attractive light purple flowers.
Growing Prostrate Rosemary Plants Prostrate rosemary plants can be purchased at the local nursery and may also be found under the names Blue Agave, American Aloe or Maguey. Conversely, you can propagate rosemary by clipping 2 inches (5 cm.) of soft, new growth. Remove the lower inch of leaves, dip in rooting hormone and then place the start in damp, sterile seed mix. Place the new plant in indirect sunlight in a warm area and mist daily. Roots should begin to form after about two to three weeks, at which time you can transplant into pots to continue to grow. After three months, the rosemary is big enough to transplant outdoors in a full sun exposure, four to six hours per day. Trim any extra long or damaged branches on the rosemary. Dig a hole a couple inches deeper than the root ball of the herb. Mix 2 to 4 inches of shredded bark or gravel into the soil to provide better drainage. Plant the rosemary and back fill the hole. Water the plant in, taking care not to drown it. Additional plant should be space 24 to 36 inches (60-90 cm.) apart in the garden.
Care of Trailing Rosemary The care of trailing rosemary is quite simple. Water, but don’t drown the plant. Remember, rosemary is used to dry conditions. Fertilize rosemary with 1 ½ tablespoons of slow release 10-10-10 fertilizer around the base of the plant and work in lightly with a hand cultivator. Follow up with some water to activate the fertilizer. Not only is prostrate rosemary a no-fuss herb, it is also drought tolerant and primarily pest resistant. That said, keep weeds away from around the base of the rosemary. Spittle bugs, the one pest rosemary doesn’t seem to be resistant to, may use the weeds as living quarters while they snack on your rosemary. A spray from the hose may be enough to wash them off. A half inch layer of white sand around the rosemary’s base will also reduce weed growth and decrease the possibility of root rot. Your new rosemary herb can be used either fresh or dry with foods such as roasted potatoes, lamb, pork, fish and poultry dishes and veggies. You can also throw some on the grill when barbecuing to impart a lovely flavor or even use mature woody stems as skewers over the grill.
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