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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Hostas are a perennial favorite among gardeners and with 2,500 varieties to choose from, there’s a hosta for every garden need, from ground cover to giant specimen. They come in leaf colors that range from almost white to a deep, dark, blue-green. They reach their full maturity in four to eight years and given good care and the right growing conditions, can outlive their owners. They’re a great plant to share with neighbors and friends and are prime candidates for transplanting. Hostas are easily moved once you know how. To transplant hosta plants, you’ll need a good shovel, nutritious additives for the soil, and, for larger specimens in particular, a means to move your plant.
When to Transplant Hostas Before we discuss how to transplant hostas, we need to talk about when to transplant hostas and that involves both time of day and time of year. The best time to transplant hostas is in the spring, but that’s really because it’s easier on you, the gardener, than on the transplant. Hosta plants always need plenty of water and the trauma of transplant, no matter how slight, increases that need. So, the best time to transplant hostas is when Mother Nature is more likely to do the watering for you. It’s also easier to see the new shoots, without risk of leaf damage. If you have a choice in deciding when to transplant hostas, don’t do it in high summer when the ground is hard and the air is dry.
How to Transplant Hostas Before transplanting hostas, it’s best to prepare their new home. Remember, when you’re thinking about the best time to transplant hostas, you should also be thinking about the best place to transplant hosta plants. They could be living there for the next fifty years. Dig the new hole wider and deeper than the old. Mix plenty of organic enrichments into the refill dirt and add some time release fertilizer, not only to help get your plants off to a good start, but to give it a healthy future as well. Dig all around the hosta clump and, using a garden shovel or fork, pop the clump out of the ground. Rinse as much of the old soil off as you can without damaging the roots and then move your hosta to its new home. Beware, hosta clumps are heavy! If you’re thinking about dividing your plants, now’s the time to do it.
Have a wheelbarrow handy or a tarp that you can use to drag the clump to its new home. Keep the roots damp and shaded, particularly if there will be a delay in when to transplant. Hosta plants depend on their root’s rapid adjustment to their new environment. Set the clump in its new home a little above the depth it was in the old. Fill in around it with the enriched soil, mounding the soil around the clump until it’s covered to a little over the depth it was before. When the soil settles over time, the clump will rest at its original depth. Keep the clump well watered for the next six to eight weeks and watch it carefully in the weeks thereafter for signs of wilt due to lack of moisture. Be aware that the first season after transplanting hosta may yield smaller leaves due to trauma, but the following year will see your plant happy and healthy once again.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Hostas make a lovely shade garden plant but there is no reason that these hardy and versatile foliage plants need to remain tucked away in your shade garden. Hostas will also thrive in containers and look wonderful accenting a shady patio or porch. Also, if you have serious trouble with slugs in your garden, container gardening with your hostas may be the answer.
How to Plant Hosta Plants in Containers To plant your hostas in containers: Fill the base of the pot you’ve chosen with rocks for drainage. One or two inches will do. Fill the pot with your choice of soil mix. Don’t fill it completely just yet, though. Place a handful of slow release fertilizer in the container. Add a little bit of soil to the fertilizer, mix it up well and then put the hosta on top of that. Remove the hosta from its growing pot and fork over the rootball to help free the roots. This will help the plant establish quickly in the new container, but will not damage the roots. Center the hosta in the pot and then fill the container with more soil. Make sure you water the plant carefully. Finally, cover the surface of the container with a thick layer of small pebbles. This stops any slugs and will help keep the roots of your hosta cool. It’s also going to prevent the soil from drying quickly.
Remember that hostas in containers need water regularly. Make sure you water them below the leaf canopy and around the crowns. Excessive wetting can mark the leaves. At the same time, make sure that the container you plant your hostas in has good drainage. This is important to keep root rot from setting in. You can tuck in a few other shade loving flowers and plants as well. Hostas make a wonderful backdrop to help make the colors of the flowers pop. Even on their own, hostas can help add a tropical feel to a shady but soilless area in your garden.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
One of the beautiful features of hostas are their rich green leaves. When you find your hosta plant leaves turning yellow, you know something is wrong. Yellowing leaves on hosta doesn’t necessarily mean disaster, but it is definitely time to investigate. The problem could be anything from too much sun to incurable diseases. If you want to find out why hosta leaves turn yellow, read on.
Reasons for Yellow Hosta Leaves Hosta leaves turn yellow for a wide variety of reasons, and it is important for you to figure out the particular reason that applies to your plant. Hosta Leaves Turning Yellow from Scorch Perhaps the easiest situation to remedy is when yellow hosta leaves indicate too much sun. Hosta are plants that grow best in partial shade or even full shade. In fact, they are regular fixtures in the shade garden. If you grow them in full sun, you can expect yellow hosta leaves. The foliage turns yellow and scorches at the margins. When you see hosta plant leaves turning yellow because of too much sun, it is termed hosta scorch. Hosta scorch is even more pronounced if the plant is also grown in poor soil. The plant prefers soil rich in organic matter that will hold water. During a drought, or when dried out in full sun, the hosta leaves become pale and the margins scorch. You can give the plant temporary relief by watering well early in the day, but the better and more permanent solution is to transplant the hosta to a shaded site in high organic matter soil.
Yellowing Leaves on Hosta Indicating Disease When yellow hosta leaves indicate disease, the options for treating the problem are more difficult. When you see yellowing leaves on hosta, the plant may have petiole rot, caused by the fungus Sclerotium rolfsii var. delphinii. The earliest symptoms are yellowing and browning of the lower leaf margins. If you see brown, mushy decay and white fungal threads or fungal fruiting structures about the size of mustard seeds at the base of the petiole, your plant probably has this disease. You cannot save plants infected with petiole rot. Prevent the problem by inspecting young plants carefully before you plant them. You should also remove and destroy all infected plants and remove and replace the soil to 8 inches.
Other fungal diseases, rots and virus diseases that cause yellowing leaves on hosta are equally impossible to cure. For fusarium root and crown rot, bacterial soft rot, hosta virus X and other viruses, all you can do is remove the plants and destroy them, trying not to spread the disease to other plants. Since fungal diseases live in the soil and attack hosta at or below the surface of the soil, you may need to kill the fungus by solarizing the soil with black plastic. Be sure to keep your garden tools clean, keep the area free of debris, and avoid transplanting diseased plants. Other fungal diseases, such as root and stem rot, are generally caused by excessive moisture and are usually deadly. Be careful not to overwater and don’t limit air circulation by crowding the plants. Water your hosta at the soil level to keep the leaves dry.
Pests Causing Yellow Hosta Leaves Foliar nematodes are microscopic worms that live inside the leaves. Symptoms, which are usually first noticed in June, begin as a yellow discoloration that later turn into brown streaks between the leaf veins. Keep an eye on the plant and remove affected leaves immediately to prevent the pests from spreading.
Hosta Leaves Turning Yellow Naturally Once the growing season dies down, hostas will naturally begin to enter dormancy. When this happens, you may notice yellowing hosta leaves. This is perfectly normal and nothing to worry about. Once the leaves have completely died back in fall, you can cut the plant back.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Hostas have becomes garden favorites in recent years, and it isn’t difficult to figure out why. Available in a huge variety of sizes, colors and forms, hostas provide color and interest in those difficult, shady garden spots. Hostas are relatively trouble free, but they can be affected by various diseases. Read on to learn more about a few of the most common hosta plant diseases and treatments.
Common Hosta Diseases Diseases of hosta plants generally include both fungal and viral issues, as well as problem caused by nematodes in the soil. Fungal Diseases Anthracnose – This disease plagues not only hosta, but many other types of plants, including trees and tomatoes. Although it usually isn’t fatal, the large, pale brown spots, small black splotches and a tattered appearance can definitely detract from the appearance of the plant. A fungicide may help prevent the disease. Be sure hostas are spaced widely enough to provide air circulation; anthracnose thrives in damp conditions. Fusarium root/crown rot – This fungal disease usually appears in late spring, when leaves turn yellow and brown before they die and drop from the plant. Stems near the soil line often display a dry, brown or black decay. Infected plants should be removed, as plants with crown rot normally cannot be treated.
Sooty mold – Common hosta diseases include sooty mold, which is often found on hostas planted under trees affected with sap-sucking pests, such as scale or aphids. The pests produce a sugary excrement, which drops on the plant and attracts the dark, unattractive mold. Sooty mold is unsightly but usually harmless. However, it can block light, which can affect the health of the plant. The fix? Wash the guck off with warm, soapy water and treat the plant for pests. Viral Diseases Hosta virus X – Early symptoms of hosta virus X include green or blue spots that give the leaves a mottled appearance. The symptoms look normal at first, but the leaves may become twisted, puckered or distorted as the disease progresses. Unfortunately, there is no cure for this viral disease, which is easily spread from plant to plant on garden tools or hands. Plants should be destroyed as soon as possible. Treating hosta diseases such as Hosta virus X requires cleaning and sanitizing of all garden tools.
Other viral diseases include tomato ringspot, tomato wilt, impatiens necrotic spot and Arabis mosaic. Although symptoms vary, affected plant leaves tend to display puckering and yellowing. Some may develop concentric rings that look like targets. Nematodes Nematodes are miniscule worms that live in the soil or inside the tender hosta leaves. The foliage turns yellow when the nematodes are feeding in early summer. As the season progresses, the leaves develop brownish streaks between the veins. Eventually, entire leaves turn brown and drop from the plant. Affected leaves should be destroyed. To prevent the nematodes from spreading, water the plant at the soil level to keep the leaves dry.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
One of the boldest and easiest to grow perennial plants is the hosta. These large leaved beauties come in a range of sizes and hues and thrive in semi-shady areas of the garden with little extra care. However, pests on hosta plants can damage the exceptional foliage and diminish the plant’s health. Check out some of the common hosta pests so you know what to look for and how to control these damaging little devils.
Recognizing Pests on Hosta Plants Native to Asia, hosta plants now come in a range of cultivars and species readily available to gardeners. While hostas are fairly self-sufficient, hosta insect pests can really wreak havoc on the attractive leaves. Hosta plants are primarily grown for their majestic foliage, although they do produce lovely racemes of flowers that add to the stature of this low light loving plant. It is best to get on the ground floor of hosta pest control right as the new leaves are beginning to poke through the soil in early spring. Waiting to address pests on hosta plants may find you with shredded, discolored or deformed leaves, diminishing the beauty of the plant. Some of the damage by insects will be easily recognizable. That is especially true for chewing insects who will make holes in leaves, remove the edges of foliage and leave your prized hosta looking like a ragged version of itself.
Other hosta insect pests cause more subtle damage. Hosta leaf nematode damage may be mistaken for a disease. These microscopic roundworms cause unsightly leaves that begin with yellowing streaks and develops into reddish brown widened areas of damage between the veins. Completely wilted plants that collapse upon themselves may be victims to voles, who tunnel under the plant and eat the roots. If you wake up one morning and find that you have absolutely no hosta foliage at all, you probably live in deer country. Hostas are just like candy to these foragers. Fences and repellents may be effective.
Common Hosta Pests Outside of deer, rabbits and voles, hosta insect pests will be the most frequent issue. By far the most widespread damage in temperate, moist regions will be from slugs and snails. Their feeding activity leaves smooth chunks missing from the foliage. You can discern their presence by spotting the slime trails they leave behind. These pests are nocturnal and hide in mulch but a good organic slug and snail bait should prevent widespread damage. Other chompers who view the hosta plant as a buffet might be cutworms blister beetles and grasshoppers. These eat the leaves and chew into the veins, leaving behind shot holes, ragged gaps and tears at the edges of leaves. The timing of hosta pest control for these insects is critical to a successful fight and undamaged leaves.
Treating Bugs on Hosta Plants There are many broad spectrum pesticides on the market, but it is best to avoid these as they may also target beneficial insects. Slug and snail baits are available and should be applied around the hosta garden in early spring and consistently after rains and irrigation. You may also try burying a small can or container at the hosta borders filled with an inch or so of beer. Protect young hosta shoots from cutworms by surrounding the new foliage with a physical barrier such as a cardboard ring. Remove it once the new shoots are a couple of inches off the ground.
Other hosta pests are a bit harder to control without chemicals. Choose a non-toxic formula and apply in early spring when the pests are in their nymph stage. Nematodes can be combated with purchased beneficial nematodes. For larger insects you can simply pluck them off the foliage and destroy the pest. Slugs, snails and cutworms will be found at night so get a good flashlight and smashing boots to save your hostas from these damaging nuisances.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Gardeners go for hosta plants because of their lush greenery and shade tolerance. These popular shade plants offer an entrancing variety of foliage, from smooth leaves to puckered leaves, green or yellow or blue leaves, and leaves the size of a quarter to leaves as big as a plate. But pests can attack foliage and make it ragged. And come winter, the foliage of these perennials wilt and die back. These are the times to sanitize your pruners and get to cutting back hosta plants. Read on for information on how to prune hostas.
Can You Cut Back Hostas? Can you cut back hostas? Yes, there’s no law against pruning hosta plants, and if you decide to undertake the task, your garden will thank you. For example, you can begin cutting back hosta plants if you don’t want the hosta flowers. It may seem odd to snip off the flowers from an ornamental, but keep in mind that the glory of hostas is their foliage. Some find that the blossoms distract from the glorious mound of overlapping leaves. These gardeners snip off the flowers stems as they appear. On the other hand, the blossoms are delicate and some smell heavenly. If you decide to let the plants flower, don’t snip them off until they begin to wilt.
When to Cut Back a Hosta When to cut back a hosta depends on why you are cutting back hosta plants. You may have noticed that pests love hosta as much as you do: snails, slugs, rabbits and even deer dine on it occasionally, leaving the plant unsightly. You’ll want to start pruning hosta plants as soon as you notice any pest damage. Cleaning up dead leaves helps prevent further damage from slugs and snails, and makes the munched plant look better.
How to Prune Hostas in the Winter In autumn, hosta leaves turn shades of yellow and gold, then fade. This is the beginning of the plant’s dormant season, so you won’t see any more pretty foliage until spring. This is the time to get rid of dead leaves, so you’ll want to learn how to prune hostas in early winter. Dead leaves are pest friendly, so you’ll do well to start pruning hosta plants as the foliage fades. Trim back all the leaves and foliage at ground level, then back it up and dispose of it. That helps things look neat in the garden and keeps bugs from overwintering snugly in the dead leaves.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Do hosta plants have flowers? Yes, they do. Hosta plants grow flowers, and some are lovely and fragrant. But hosta plants are known for their gorgeous overlapping leaves, not for hosta plant flowers. Read on for information about flowers on hosta plants and for an answer to the question: should you let hosta grow flowers.
Do Hosta Plants Have Flowers? Every hosta plant grows flowers. But not every hosta plant flowering is a welcome sight to the gardener. Many gardeners select hostas for the shade garden because of their lush foliage, not hosta plant flowers. The mounding leaves of cultivars can be spectacular, ranging in color from standard green to blues, white and gold. They also come in many shapes, sizes and textures. For example, if you want a very small hosta, you can plant “Baby Bunting” that even at maturity is only a few inches wide. Other hosta plants, like “Blue Angel,” can grow to over 8 feet in diameter. Because of this emphasis on foliage, hosta flowers can be viewed as an extra plus for the plant. They can also been seen as a distraction from the main show.
Flowers on Hosta Plants Hosta plant flowering can be a very fancy affair. The plants flower in summer, offering spikes of blossoms that look like lilies, in shades of lavender or white. The bell-shaped blooms can be showy and exceptionally fragrant, attracting hummingbirds and bees. New cultivars are being developed that offer even larger, more impressive blooms. Some offer up to 75 flowers per stem. In short, hosta flowers can add ornamental value to a hosta plant. Yet, many gardeners still ask: should you let hosta grow flowers?
Should You Let Hosta Grow Flowers? Whether you want pure foliage or will accept hosta plant flowers is a matter of personal taste. Each gardener must make up his or her own mind. The quality of the blossoms your hosta plant flowering produces might influence your decision. Many gardeners like tall flower scapes, but not every plant produces them. Sometimes, especially with the white-flowered hostas, the flower scapes are awkwardly short and stunted. And whether or not you allow them to bloom, you’ll want to clip the scapes when the blossoms fade. Faded hosta flowers are not attractive.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
How many types of hosta are there? The short answer is: a whole lot. Hostas are extremely popular in gardening and landscaping due to their ability to thrive even in deep shade. Maybe because of their popularity, a different hosta variety can be found for pretty much any situation. But what are the different types of hosta? Keep reading to learn more about the types of hosta plants.
Different Types of Hostas Different varieties of hosta can be split into some basic categories. Some are bred not just for their foliage and shade tolerance, but also for their fragrance. Hostas produce stalks of delicate, trumpet shaped flowers in shades of white and purple, and certain varieties of hosta are known especially for their scent. Types of hosta noted for their excellent, fragrant blossoms include: “Sugar and Spice” “Cathedral Windows” Hosta plantaginea Hostas also vary greatly in size. If you’re planting hostas to fill out a large shady space, you may want the biggest hosta you can find.
“Empress Wu” is a variety that can grow to 4 feet in height. “Paradigm” is another one that can reach 4 feet high and 4 feet wide. Some varieties of hosta come in at the other end of the spectrum. “Blue Mouse Ears” is only 5 inches tall and 12 inches wide. “Banana Puddin” is 4 inches high. Of course, there are innumerable varieties in between the largest and the smallest, meaning you should be able to find just the right one for the spot you have picked out.
Hosta colors are usually some shade of green, though there is a lot of variety here too. Some, like “Aztec Treasure,” are much more gold than green, making for a sunny splash in the shade. Others are green, like the “Humpback Whale,” and blue, like the “Silver Bay,” and many are variegated, like “Ivory Queen.” Options are nearly endless when choosing hosta plants for the garden.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Have you ever thought about growing hosta indoors? Typically, hostas are grown outdoors in shady or semi-shady areas, either in the ground or in containers. However, just because growing hosta as an indoor plant isn’t the norm, that doesn’t mean it can’t be done – beautifully! Read on to learn how to grow hosta indoors.
Can I Grow Hosta Inside? Definitely! However, growing hosta indoors requires a bit more care and attention to ensure the plant’s needs are met. How to Grow Hosta Indoors Begin with the right container for your hosta. Some varieties require a very large pot, while small cultivars do fine in a relatively small container. To prevent rot, be sure the container has a drainage hole in the bottom. Place the hosta where it receives bright, indirect sunlight. Avoid direct sunlight, which is too intense. As with many other houseplants, they appreciate time outdoors during spring and summer, preferably in a somewhat shady location. With hosta houseplant care, you’ll want to water indoor hosta plants whenever the soil feels slightly dry, as hosta prefers soil that is consistently moist, but never soggy. Water deeply until excess trickles through the drainage hole, then let the pot drain thoroughly. Avoid wetting the leaves.
Fertilize hosta every other week during the growing season, using a water-soluble fertilizer for houseplants. Unlike most indoor plants, indoor hostas require a period of dormancy during the winter, which replicates the plant’s normal outdoor growing conditions. Move the plant to a dark room where temperatures remain cool – about 40 F. (4 C.), but never freezing. The leaves may drop off during dormancy. Don’t worry; this is par for the course. Protect the roots with a layer of shredded bark or other organic mulch. Water the hosta lightly once a month throughout the winter months. While the plant requires little moisture during this time, the soil shouldn’t be allowed to become bone dry.
Return the hosta to its normal location in spring and care for as normal. Move the hosta to a larger container whenever the plant outgrows its pot – generally once every two or three years. If the plant has become larger than you like, this is a good time to divide it.
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Dummer. ゛☀
2017年08月28日
Dummer. ゛☀
Hostas have become extremely popular in the last few years, with good reason. Gardeners love hostas for their colorful foliage, versatility, toughness, easy growth habits and ability to grow and thrive without bright sunlight.
Plants that Grow Well with Hosta Once you’ve decided that hostas are the best plant for that shady garden spot, it’s time to think about the best hosta plant companions. Although they’re gorgeous on their own, it helps to add a few plants that show them off to best advantage. Hosta performs well in full or partial shade, so the best companions for hosta are those that are suitable for the same growing conditions. Climate isn’t a huge consideration unless you live in a very warm climate, as hosta grows in USDA plant hardiness zones 3 through 9.
Blue and green hostas are easiest to coordinate with other plants, including colorful annuals and perennials. Gold or yellow shades or variegations are trickier, as the colors may clash with other plants, especially when the hues lean towards chartreuse. Often, it works to echo the colors in the leaves. For example, a hosta with blue leaves is complemented by purple, red or pink flowers, while a variegated hosta with a splash of white or silver looks stunning with white flowers or other plants with silvery leaves.
Companions for Hosta Here are a few suggestions to get you started: Spring bulbs Trillium Snowdrops Tulips Crocus Daffodils Anemone Caladiums
Ornamental grass Sedges (Carex) Japanese forest grass Northern sea oats Shrubs Rhododendron Azalea Hydrangea Perennials Wild ginger Pulmonaria Heuchera Ajuga Dianthus Astilbe
Maidenhair fern Japanese painted fern Annuals Begonias Impatiens Coleus
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