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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Aeoniums are fleshy leaved succulents that grow in a pronounced rosette shape. Growing aeoniums is easy in areas with few freezes. They can also grow indoors, in a sunny window where temperatures are toasty warm. Learn how to grow an aeonium plant for unique texture and form in both indoor and outdoor garden displays.
What Are Aeoniums? Succulent plants have a special adaptive survival strategy for hot, dry locations. They come in a wide range of colors, textures and sizes. What are aeoniums? These plants also have the fleshy leaved characteristic of succulents, where they store moisture. Unlike many other succulents, however, aeonium have shallow root systems and cannot be allowed to dry out completely. Only the top few inches of soil should be allowed to dry out when growing aeoniums. There are over 35 aeonium species, in a graduating range of sizes.
Aeonium Uses Consider growing aeoniums as part of a cactus or succulent display. They do well in shallow pots with a mixture of cactus soil and peat. You can combine them with other plants such as aloe, agave or jade plants. Place a thin layer of inorganic mulch such as ornamental rock around the plants and place in a sunny warm location. For outdoor use, place them along sunny borders or in rockeries. In temperate or cooler zones, frost may kill the foliage and the rosette will fall off. If the plant is mulched it will grow anew in spring.
How to Grow an Aeonium Plant Provide the plant with well-drained soil in a sunny location. They prefer temperatures between 40 and 100 F. (4-38 C.). These succulents are very easy to grow from cuttings. You really just have to cut off a rosette and let the cut end dry out for a couple of days. Then set it in lightly moist peat moss. The piece will root quickly and produce a new plant.
Caring for Aeonium Plants Aeonium care is remarkably easy. Plants in containers require more frequent watering than those in ground. Fertilize aeonium in containers once annually in spring when new growth commences. In-ground plants rarely need fertilizer, but may benefit from a light coating of mulch just around the base of the plant. Be careful not to pile it up around the stem or rot might set in. The most common problems when caring for aeonium plants are root rot and insects. Root rot is prevented by using clay pots with good drainage or checking soil percolation prior to planting. Keep the roots moist but never soggy. Good aeonium care also requires you to watch for pests. Mites and scale may attach the succulents. Combat these with horticultural soaps or neem oil. Be careful when using soap spays, however. Spraying too frequently can cause discoloration and lesions on the skin of the plant.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Agave is a long-leaved succulent plant that naturally forms a rosette shape and produces a flower spire of attractive cup shaped blooms. The plant is drought tolerant and perennial, making it ideal for the mature arid garden. Many agave plants are native to North America and are adaptable to colder climates in the Pacific Northwest and even Canada.
Types of Agave Almost every climate is capable of growing agave as some are hardy down to single digits for short periods of time and with shelter. Agave is in the Agavaceae family of succulents which include dracaena, yucca and ponytail palms. The century plant (Agave americana) is one of the most notorious landscape agaves. It produces a lovely inflorescence (flower) and then the main plant dies, leaving behind pups or offsets. The American agave or American aloe, as it is also called, has a white stripe running down the center of the leaves. It is a warm season agave only. There are many other types of agave, which makes it easy to find and garden with this stunning plant. Some of these include: Agave parryi Agave ocahui Agave macroacantha Agave gigantensis
Planting Agave Agave have a large tap root and do not transplant well, so choose an appropriate site when planting agave. The majority of the roots are surface roots and do not require a deep hole if planted when young. Check your soil for drainage, or if planting in heavy clay soils amend the soil with sand or grit. Mix in enough sand to make the soil halfway comprised of grit. Water the plant diligently for the first week and then cut it to half the second week. Taper off even more until you are only watering once every week or two.
How to Grow Agave Growing agave is easy if you plant the right variety in the right location. Agaves need full sun and gritty soil that percolates easily. They can even do quite well when potted but use an unglazed clay pot that will allow evaporation of excess moisture. Water needs are moderate to light depending upon the heat of the season but the plants should be allowed to dry out before irrigation. In spring they benefit from the application of a granulated time release fertilizer that will provide nutrient needs for the season. Many varieties of agave will die after blooming and then produce pups or offshoots from their base to replace themselves. On varieties where the parent plant doesn’t die after flowering, it is a good idea to get long handled pruners and remove the spent bloom. After establishment, neglect is actually how to grow agave and produce happy plants.
Agave Plant Care in Pots Agave that are grown in pots require even more grit in the soil and can actually be planted in a cactus mix. The addition of small rocks or pebbles to the soil increases the drainage capabilities of the container. Agave plants in containers will require more water than those in the ground and will need to be re-potted every year or so to replenish soil and root prune the plant. Agave plant care for container grown plants is otherwise the same and it affords you the ability to bring sensitive forms indoors when temperatures plummet.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Succulent and southern gardeners will recognize the damage of the agave snout weevil. What is the agave snout weevil? This pest is a double edged sword, doing damage to agave and other plants in both its beetle and larval form. Damage occurs quickly, followed by death because the bite of the weevil deposits bacteria that literally rot the agave. As the tissues soften and decay, the parent and its progeny are merrily munching away on your plant. Snout weevil control is essential in southwestern areas, especially where agave is grown to make tequila. A population of agave snout weevils can decimate the agave crop and then what will we put in margaritas?
What is the Agave Snout Weevil? The weevil is a form of beetle and grows approximately an inch long. It is a black insect with the scientific name Scyphophorus acupuntatus. The insects usually choose unhealthy or old agaves to deposit their eggs. Once an agave has bloomed, it is at the end of its life cycle and these plants are especially prone to agave snout weevil infestations. The bite of the beetle injects bacteria which cause the plant tissues to soften and liquefy. This makes it easier for the larvae and parent to eat the tissues, but it will eventually cause the collapse of even the most might of agave. Snout weevil damage is extensive and soon leads to death of the plant.
Snout Weevil Damage The agave is a succulent plant also known as the Century plant. This is due to the bloom habit of the plant. It blooms only once in its life and then dies, and it can take years for the plant to produce that one flower. The adult weevil bites the heart of the agave and lays its eggs there. When the larvae hatch, they spread bacteria and do physical damage as they chew further into the core of the plant. The larvae are the same ones you find in a tequila bottle and they busily chew until they have disconnected the interior tissue that connected the leaves to the crown. One day it will look fine, the next day the plant is wilted and the stiff rapier sharp leaves are flat to the ground. The foliage will pull easily out of the crown and the center of the rosette is mushy and foul smelling. By the time this happens, snout weevil control is pointless for that plant, but if you have other succulents and agave, there are steps you can take to protect them. Controlling Snout Nosed Weevils Agave snout weevil treatment is widely available in Arizona, New Mexico and zones where the plants are grow outdoors. The indoor agave gardener may have to look a little harder for products that will work against the weevils. Triazanon is available at most nursery and garden centers. Apply the granular form and dig it into the soil around the agave. When you water, the chemical will slowly release down to the roots of the plant and then into the vascular tissue, protecting it from the pest. Apply this snout weevil control once per month during the growing season. Agave snout weevil treatment with sprays is tricky because the insect is protected by the thick leaves. If your agave has already succumbed, replace it with a resistant variety so you don’t have to again go through the trauma of losing a favorite plant.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Anthracnose of agaves is bad news to be sure. The good news, however, is that although the fungus is unsightly, anthracnose on agave plants isn’t an automatic death sentence. The key is to improve growing conditions, and to treat the plant as soon as possible. Read on to learn how to prevent and control anthracnose of agaves.
What is Agave Anthracnose? Like other agave fungal diseases, anthracnose of agaves generally occurs when growing conditions are wet and humid. While this may be due to the moods of Mother Nature, including splashing rain, it can also be the result of too much shade or excessive irrigation, especially via overhead sprinklers. The primary sign of anthracnose of agaves include unsightly sunken lesions on the crown and sword-like leaves, often with a visible, reddish-brown spore mass. The disease spores spread from plant to plant via splashing water or wind-blown rain.
Agave Anthracnose Treatment and Prevention When it comes to anthracnose of agaves, prevention is definitely the best means of control, as fungicides aren’t always effective. Plant agaves in full sunlight, always in well-drained soil. Irrigate the plant using drip irrigation or a soaker hose and avoid overhead sprinklers. Never water overhead if the disease is present. Disinfect garden tools by spraying them with isopropyl rubbing alcohol or a mixture of 10 parts water to one part household bleach. If you’re in the market for new agave plants, look for healthy, disease-resistant cultivars. Allow generous distance between plants to provide adequate air circulation. Part of agave anthracnose treatment involves the immediate removal of growth with active lesions. Destroy infected plant parts carefully to avoid spread of disease. Never compost diseased plant parts. Apply sulfur powder or copper spray weekly, beginning in spring and continuing every couple of weeks throughout the growing season, but not during hot weather. Alternatively, neem oil spray applied every couple of weeks may also be an effective preventive measure. Spray agave plants and the surrounding soil with a broad-spectrum fungicide during wet, humid weather. Products containing Bacillus subtilis are non-toxic to bees and other beneficial insects.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Root rot is a common disease in plants that is usually caused by poor drainage or improper watering. While more common in potted plants, root rot can also affect outdoor plants. Desert plants like succulents, cacti and agave are especially susceptible to root rot if they are planted in the wrong conditions. Continue reading to learn more about managing root rot in agave. What is Agave Root Rot? Agave, also commonly called century plant, is a desert plant native to Mexico. It grows best in dry conditions in full sun. Too much shade or soil that is too moist and drains poorly can cause the plant’s roots to rot. Weather fluctuations, such as unusual cold and rainy periods followed by extreme heat and humidity, can also contribute to root rot.
Agave is hardy in zones 8-10. They have been known to survive temperature down to 15 degrees F. (-9 C.) but when exposed to freezing temperatures, the plant will be damaged by frost in just a few hours. Weakened, damaged plant tissues become a perfect host for fungal and bacterial diseases and pests. Then as the earth heats up and humidity fills the air, fungal diseases quickly grow and spread. Because roots are under soil, root rot may go undetected until the whole plant tips over from having no roots to anchor it in place. Bacterial crown and root rot can also be common in agave, caused by the agave snout weevil. The adult agave snout weevil chews on the lower parts of the agave plant, injecting the plant tissues with a bacteria as it chews, which causes them to rot. It then lays its eggs in the rotting tissue and, when hatched, the agave snout weevil larvae feed on the rotting crown and roots.
Alleviating Root Problems of Agave Plants Agave root rot symptoms may include a general unhealthy appearance of the plant, lesions around the plant crown, tipping over of the plant and roots that are gray/black and slimy. If caught before the entire root system has rotted, you can dig up the plant, remove all soil from the roots and cut off all the rotted parts. Then treat the plant and roots with a fungicide such as thiopanate methyl or neem oil. Move the plant to a different location with full sun and well-draining soil. Pumice can be mixed in with the soil for better drainage. If the roots have all rotted, all you can do is discard the plant and treat the soil with fungicide to prevent the fungal disease from spreading to other plants. To prevent agave root rot in the future, remember agave is a desert plant. It needs full sun and should be planted in an area that tends to be dry, like a rock garden.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
While usually an easy plant to grow in rock gardens and hot, dry areas, agave can be susceptible to bacterial and fungal rots if exposed to too much moisture and humidity. Cool, wet spring weather that rapidly changes to hot, humid summer can cause a surge in fungal growth and pest populations. Mid to late summer crown rot of agave plants can be common in cooler climates and potted plants. Read on to learn what you can do for agave plants with crown rot. What is Agave Crown Rot?
Agave, or century plant, is native to the deserts of Mexico and hardy in zones 8-10. In landscaping, they can be a stunning addition to rock gardens and other xeriscaping projects. The best way to prevent root and crown rot of agave plants is to situate them in a location with excellent drainage, infrequent irrigation and full sun.
Agave plants should also never be watered overhead, a slow trickle of water right at the root zone can prevent the splashing and spreading of fungal spores, as well as prevent the crown rot that can happen if water pools up in the crown of agave plants. Pumice, crushed stone or sand can be added to the soil when planting an agave to provide more drainage. Container grown agave will do best in a cacti or succulent soil mixture. Crown rot of agave may present itself as gray or mottled lesions or, in extreme cases, the plant’s leaves may entirely turn gray or black and shrivel right where they grow out from the crown. Red/orange fungal spores may also be obvious near the plant crown. Crown and root rots in agave can also be caused by an insect called the agave snout weevil, which injects bacteria into the plant as it chews on its leaves. The bacteria causes soft squishy lesions in the plant where the pest then lays its eggs. Once hatched, the weevil larvae tunnel their way to the roots and soil, spreading rot as they work their way throughout the plant. How to Save Plants with Crown Rot
It is important to regularly inspect your agave plant for signs of insect chewing and rot, especially if it not growing in the optimal conditions. If caught early enough, fungal and bacterial rots can be controlled with selective pruning and treatment of fungicides such as thiophanate methyl or neem oil. Leaves with chew marks or lesions should be cut off at the crown and disposed of immediately. When pruning away diseased plant tissues, it’s recommended that you dip pruners in a mixture of bleach and water between each cut. In extreme cases of rot, it may be necessary to dig up the whole plant, remove all soil from the roots, prune off all crown and root rot that is present and, if there is any plant left, treat it with fungicide and replant it in a new location. Or it may be best to dig up the plant and replace it with a disease resistant variety. Before planting anything in the area that an infected plant was growing in, you should sterilize the soil, which could still contain pests and disease after the infected plant has been removed.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Agave is a desert plant, native to Mexico and hardy in zones 8-10. While generally a low maintenance, easy-to-grow plant, agave can be susceptible to fungal and bacterial rots, as well as pest problems such as the agave snout weevil and the agave plant bug (Caulotops barberi). If you have noticed bugs eating agave plants in your landscape, continue reading to learn more about Caulotops barberi pests and controlling agave plant bugs in the garden.
What are Caulotops Barberi Pests? In the landscape, agave plants can potentially grow to a height and spread of 20 feet. However, these landscape grown agaves can be susceptible to the Caulotops barberi pest, resulting in stunted or irregular growth. If you notice stunted or distorted growth, speckled or spotted foliage, or what appears to be scabs or chew marks on your agave plants, you may wonder, “Are bugs on my agave?” The answer may be a resounding, yes! The agave plant bug is also commonly called the agave running bug because for such a small insect, it has long legs, enabling the insect to run very quickly.
These 1.6 mm long insects can go almost unnoticed because they are so small and will quickly hide if they feel threatened. Agave plant bugs are most likely the culprit in U.S. hardiness zones 8-10. Container grown agave plants in cooler climates are rarely effected by this pest, though. In late summer to early fall, large populations of agave plant bugs may infest agave and other succulents, causing massive damage to a xeriscape. In groups, these small tan-black colored insects are much easier to spot, but by then you’ll have quite an infestation to try to rid your landscape of and damage to some of the plants may be irreversible.
Agave Plant Bug Control Insecticidal soap or broad spectrum insecticides can be effective in controlling agave plant bugs. However, these tiny insects can hide in soil, mulch and garden debris around the infected plant, so it is necessary to treat all areas around the plant as well. Keep beds clear of debris to eliminate hiding places. Insecticides should be applied in the early morning or late at night, when Caulotops barberi pests are most active. Agave plant bug control should be repeated every two weeks to ensure eradication of this pest. Be sure to spray all surfaces of the plant, as these small insects can easily hide in every nook and cranny. A preventative systemic insecticide can be used in spring to help control agave pests.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Can agave grow in pots? You bet! With so many varieties of agave available, container grown agave plants are an excellent choice for the gardener with limited space, less than perfect soil conditions, and a lack of abundant sunlight. Since most agaves thrive year round in warmer climates, container plants are also a wonderful choice for gardeners living in climates that experience colder temperatures.Potted agave also provide the flexibility of being mobile. Growing agave plants in pots allows you to move the containers to the location that provides the light, temperature and weather conditions that will help your agave thrive.
How to Grow Agave in Containers Growing agave plants in pots is fun and rewarding. Any agave can be grown in a container, but the smaller varieties are the most popular. Agave plants love to be root bound, so growing them in pots make these plants excellent candidates for houseplants.
All container grown agave pants need a soil that dries slowly but drains quickly. For outdoor containers, you can make a good soil mixture by mixing equal parts of compost; potting mix or garden soil; and either gravel, pumice, or coarse sand. Do not use peat moss, which is undesirable for agave plant growing. For indoor grown agave, make sure you use a sterilized potting mix combined with either gravel, pumice, or coarse sand. When you pot your agave, do not bury the plant too deeply in the soil. Make sure the crown of the plant is above the soil line to prevent crown rot, a disease that is detrimental to agave plants.
Potted Agave Care Agave plants need plenty of sunlight. If you are growing agave plants indoors, choose a bright, sunny window with as much sun possible. A south- or west-facing window works very well. Keep your agave sufficiently watered, and always water completely, making sure the soil is at least half dry before watering again. If you are not sure the soil is dry enough, it is better to wait a day to avoid over-watering your plant. Don’t forget to fertilize. Late spring and summer are the times to feed your container grown agave with a balanced (20-20-20), all-purpose liquid fertilizer at half-strength once a month.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
It's always fun as well as very interesting to find growing in the wild a plant that we buy when back at home in order to have it in the gardens! Aubrieta is one of our favourites. It manages to bloom early, even in gardens in the UK, and this is because, in the wild, it grows high up in the mountains and is used to inhospitable conditions like the English spring, which punishes so many of the other early-flowering plants.
Distribution This neat plant with its beautiful muve flowers can be found in Crete, where the plants shown on this page were photographed. We have also seen wild Aubrieta in the Gargano Peninsula in Italy.
Habitat and Blooming Times Aubrieta deltoidea grows in rocky habitats high up in the mountains, where it forms pretty cushions of flowers from March to early June.
Etymology Aubrieta, the genus name, honours the 17th century French artist Claude Aubriet, who had held the post of Royal Botanical Painter at the French Royal Garden. The specific epithet deltoidea means triangular (shaped like a delta). In the past the common name given to this flower was Aubretia, but nowadays Aubrieta, spelt exactly as in the genus name, is more commonly used.
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Dummer. ゛☀
2017年08月15日
Dummer. ゛☀
Astragalus tragacantha ssp. vicentinus - is one of the rare plants to be found in Cape St. Vincent Natural Park (Parque Nacional de Sudoeste Alentejano e Costa Vicentina) in the Algarve region of Portugal.
Sometimes known as Astragalus massiliensis this plant is recorded from southern France, Northern Spain and other parts of the western Mediterranean region. It is a coastal species and grows in sandy soils among scrub.
Close-up the flower and leaves of the plant reveal that it is a member of the Pea family of plants At Cape St. Vincent this plant is found along the roadsides towards the lighthouse. It is an uncomfortable candidate for photography as it grows on stony ground among thorny shrubs and plants. It is also becoming harder to find as much of its habitat is being taken over as alternative car parking areas for visitors to this iconic part of Europe. Cape St. Vincent is Europe's most south-westerly point and attracts tourists by the coachload in the summer months.
Astragalus tragacantha flowers in March and early April. It forms low-growing pincushion-shaped plants. The flowers appear white from a distance, but on closer inspection are tinged with purple.
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