动态第869页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年08月28日

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.[图片]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.[图片]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?[图片]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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2017年08月28日

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.[图片]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.[图片]“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.[图片]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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2017年08月28日

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.[图片]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.[图片]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.[图片]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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2017年08月28日

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.[图片]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.[图片]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.[图片]Companions for Hosta Here are a few suggestions to get you started: Spring bulbs Trillium Snowdrops Tulips Crocus Daffodils Anemone Caladiums[图片]Ornamental grass Sedges (Carex) Japanese forest grass Northern sea oats Shrubs Rhododendron Azalea Hydrangea Perennials Wild ginger Pulmonaria Heuchera Ajuga Dianthus Astilbe[图片]Maidenhair fern Japanese painted fern Annuals Begonias Impatiens Coleus

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2017年08月28日

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2017年08月28日

Hosta plants are a perennial favorite among gardeners. Their lush foliage and easy care make them ideal for a low maintenance garden. Originating in the Orient and brought to the Europe in the 1700s, today there are over 2,500 cultivars with such variety in leaf shape, size and texture, that an entire garden could be devoted to growing hostas alone. While hosta care is considered easy, it helps to know a little bit about how to grow hostas to help the plants reach their full garden potential.[图片]Where and How to Grow Hostas Although hosta plants are touted as shade lovers, their sunlight requirements vary widely. Successfully growing hostas in the shade depends on color. Hosta leaves come in a variety of greens, ranging from a color so deep it’s called blue to a light chartreuse to a soft creamy white. A good rule of thumb for the placement and care of hostas is the lighter the foliage, the brighter the sun. The deeper darker foliage retains it color best in moderate shade. The variegated varieties need more sunlight to keep their white and gold stripes. All hostas need some shade and few, if any, will do well in strong direct sunlight. They will fully mature in four to eight years.[图片]For the best care of hostas, plant them in rich organic soil with a slightly acidic pH. You’ll only have to do it once. Dig the planting hole about a foot deep, and wide enough to accommodate the spread of a full sized plant. This will make it easier for the roots to establish a foothold and begin their horizontal spread. In spite of their almost tropical look, hostas are rugged and once established, they tolerate almost any soil and will grow for years. When discussing how to grow hostas, drainage is most important. Dormant season crown rot is one of the few diseases that attack these plants. Good hosta care requires good drainage. When newly planted, keep the roots moist, not wet. Once established, hosta plants aren’t fussy and are very tolerant of summer drought.[图片]Tips for Hosta Care Once your plant is established, hosta care becomes a matter of simple maintenance. To keep your growing hostas healthy, fertilize them each spring with an all-purpose garden fertilizer. Additional summer fertilizing may be helpful, but not necessary. Granular fertilizers should never sit on the leaves. With the exception of crown rot and leaf rot, Hosta plants are relatively disease free. Deer find the tasty and if deer are a problem in your neighborhood, you might try planting daffodils around your hosta to keep them away from the emerging shoots. Another difficulty in hosta care is slugs, which leave unsightly holes in the leaves. A light scattering of sand around your plants will help keep them away.[图片]Hosta plants are a beautiful addition to any garden and fit well in a variety of spaces, ranging from a few inches to four feet across. Care of hostas is easy and now you’ve discovered the basics of how to grow hostas, you’ll find them a welcome addition to your yard.

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2017年08月28日

I love ferns and we have our share of them in the Pacific Northwest. I’m not the only admirer of ferns and, in fact, many people collect them. One little beauty begging to be added to a fern collection is called the heart fern plant. Growing heart ferns as houseplants may take a little TLC, but is well worth the effort.[图片]Information About the Heart Fern Plant The scientific name for the heart leaf fern is Hemionitis arifolia and is commonly referred to by a number of names, including tongue fern. First identified in 1859, heart leaf ferns are native to Southeast Asia. It is a delicate dwarf fern, which is also an epiphyte, meaning it grows upon trees as well. It makes not only an attractive specimen to add to the fern collection, but is being studied for purported beneficial effects in the treatment of diabetes. The jury is still out, but early Asian cultures utilized heart leaf to treat the disease. This fern presents itself with dark green heart-shaped fronds, about 2-3 inches long and borne on black stems, and reaches a height of between 6-8 inches tall. Leaves are dimorphic, meaning some are sterile and some are fertile. The sterile fronds are heart shaped upon a 2- to 4-inch thick stalk, while the fertile fronds are shaped like an arrowhead on a thicker stalk. The fronds are not the stereotypical fern leaves. Heart fern’s foliage is thick, leathery and slightly waxy. Like other ferns, it does not flower but reproduces from spores in the spring.[图片]Heart Fern Care Because this fern is native to regions of warm temperatures and high humidity, the challenge for the gardener growing heart ferns as houseplants is in maintaining those conditions: low light, high humidity and warm temperatures. If you reside in an area with climactic outdoor conditions that mimic those above, then heart fern may do well in an area outdoors, but for the rest of us, this little fern should grow in a terrarium or a shaded place in an atrium or greenhouse. Keep the temperature between 60-85 degrees F. (15-29 C.) with lower temps at night and high ones during the day. Increase the humidity level by keeping a gravel filled drainage tray beneath the fern. Heart fern care also tells us that this evergreen perennial needs well-draining soil that is fertile, moist and humus rich. A mix of clean aquarium charcoal, one part sand, two parts humus and two parts garden soil (with a bit of fir bark for both drainage and moisture) is recommended. Ferns don’t need a lot of extra fertilizer, so only feed once a month with a water-soluble fertilizer diluted in half.[图片]The heart fern houseplant needs bright, indirect sunlight. Keep the plant moist, but not wet, as it is prone to rot. Ideally, you should use soft water or let hard tap water sit overnight to dissipate the harsh chemicals and then use the next day. Heart fern is also prone to scale, mealybugs and aphids. It is best to remove these by hand rather than relying on a pesticide, though neem oil is an effective and organic option. All in all, heart fern is a fairly low maintenance and thoroughly delightful addition to a fern collection or for anyone that wants a unique houseplant.

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2017年08月28日

The hart’s tongue fern plant (Asplenium scolopendrium) is a rarity even in its native ranges. The fern is a perennial that was once prolific in cool North American ranges and high hill lands. Its gradual disappearance is probably due to human intervention and expansion, which has removed or destroyed much of its natural growing zones. It has a limited distribution today, but some nurseries specialize in hart’s fern cultivation and these plants are part of an important reintroduction to the environment. You will have to be very lucky to find one of these plants for home cultivation. Whatever you do, don’t remove a wild plant! Growing a hart’s tongue fern in the landscape is an attractive notion, but harvesting the native plants will only further deplete their territory and help eradicate them from native environs.[图片]Recognizing Hart’s Tongue Fern Plants This fern is remarkably attractive with long glossy untoothed evergreen fronds. Leaves are 20 to 40 centimeters in length and strap-like with an almost tropical appearance. The plants can be found in Michigan and parts of New York on north- or east-facing slopes with plenty of rock cover, and at the edges of mossy tree zones. They are often accompanied in the environment by bryophytes, other ferns, mosses and sugar maple trees. The leaves stay evergreen all year and plants can develop up to 100 leaves per root zone, although 10 to 40 is more common.[图片]Hart’s Tongue Fern Cultivation The fern grows in shaded, cool areas with protection from environmental influences. Primarily found in northern forests, the plant requires moisture and is often found clinging to cracks in white limestone and other rocky regions. It is epipetric and needs just a few inches of rich humus in which to grow. Hart’s tongue fern plants grow from spores that start out asexual in the first year and give rise to the next generation, which has sex organs and is called a gametophyte. The plants are slow growing and the process is difficult to mimic in culture. Mature plants will produce swollen bases which can be removed and held in a bag of moist peat until they form rootlets.[图片]Hart’s Tongue Fern Care Due to the plant’s sensitivity to environmental influences, organic methods are necessary to take care of hart’s tongue ferns. Plant the fern in rich soil in a partially sunny to full shade location. A sheltered location is best, but you can also situate the fern in a rockery where it will feel right at home. Enrich the soil before planting with compost, leaf litter or other organic amendment. Slightly acidic soil is the best medium for hart’s tongue fern care. Water the plant during the first season regularly and thereafter when temperatures are unusually dry. Exposure to pesticides, insecticides and fungicides must not occur when you take care of hart’s tongue ferns due to their intolerance of non-organic chemicals.[图片]

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2017年08月28日

If you’re looking to make a statement in your yard and have some low-lying ground to plant, the Gunnera is a great choice for visual impact. Let’s learn more about how to grow Gunnera plants.[图片]Gunnera Plant Information Sometimes called Dinosaur Food (Gunnera manicata), the Gunnera’s deeply-lobed leaves can get up to 4 feet across and the plant can stand up to 8 feet tall. Gunnera tinctoria, also known as prickly rhubarb, is similar and just as big. Both of these prehistoric-looking greenery plants will fill in large empty spaces in the corners and edges of your yard, and will thrive in boggy ground where other plants’ roots might drown.[图片]Growing and Caring for Gunnera The most difficult part about caring for Gunnera is its moisture requirements. If you have a piece of ground that is constantly saturated from deck run-off or some low ground at the bottom of a hill, you’ve found the ideal place for growing Gunnera plants. Gunnera loves moist and boggy ground and must be kept well-watered at all times. Set a sprinkler next to the plant and let it go for an hour or so, as the leaves love moisture as much as the roots do. Choose your planting spot in low ground that gets full sunlight for at least most of the day. Dig in lots of compost and other organic material when preparing the ground for planting. Give the plant a heavy feeding when you first plant it to give it a good start.[图片]It takes a lot of energy to create this much growth, and this makes Gunnera a heavy feeder. In addition to the fertilizer you dig in with the first planting, feed them twice more during the season with a good, all purpose fertilizer. Side dress the plants and water the fertilizer into the soil next to the crown. Many perennial plants can be propagated by dividing, but the Gunnera is so large that this method is hard to use. The best way to increase your Gunnera plot is by cutting out a portion of the crown much like you’d remove a wedge of pie. Do this in April or May before the main growth has begun. Plant this new juvenile plant at least 10 feet away to give both plants room to grow.[图片]Gunnera may be tough, but it can be damaged by winter frost. Cut the leaves down around November and pile them on top of the center crown left in the ground. This will insulate the more tender parts of the plant from the cold. Remove the dead leaves early in the spring to allow new growth to spring up.

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2017年08月28日

Gunnera manicata is one of the most astounding plants you will ever see. The larger specimens of these ornamental giants can be quite expensive but don’t worry, collecting gunnera seeds and growing plants from them is easy. There are just a few crucial items to know about gunnera seed propagation to ensure success. Read this little article for some tips on how to propagate gunnera from seed and grow your own giant rhubarb.[图片]Collecting Gunnera Seeds There are over 50 species of gunnera, but the most impactful is the huge Gunnera manicata, which is native to the mountains of southeastern Brazil. This monster of a plant can have leaves of 11 by 6 feet on petioles that are 8 feet in length. It is the most common in cultivation and harvesting seeds from the plant is relatively simple but they need special treatment to ensure germination. Seed propagating gunnera plants requires exacting temperatures and careful handling of the seed.[图片]Gunnera plants produce large brownish panicles filled with tiny red-brown flowers. Pollinated flowers become small red berry-like fruits. Once ripe, these fruits are filled with numerous fine black seeds. These seeds are sensitive to handling and the oils on your skin can affect germination. When harvesting seed, wear gloves to prevent contamination. Seed propagating gunnera plants is not the only method of reproduction. Another common and quick method is by dividing the root ball and planting the resulting individual babies. Growing gunnera seeds is a much slower process but you can get many more starts and have the fun of watching these monstrous plants grow from pups to huge garden specimens.[图片]How to Propagate Gunnera from Seed Once the panicles produce fruit, wait until they are ripe and bursting before harvesting them. Open fruits over a container to collect the tiny seeds. Use them immediately for best results or refrigerate them for a short period. Always use gloves when handling seed. Sow in a flat filled with good moistened compost mixed with vermiculite or perlite. Seeds should be lightly strewn at about one inch apart. These seeds need light for germination so you can simply lightly tamp them into soil or gently cover with a fine layer of sand. Cover the tray with plastic or glass and place where temperatures are 68 to 77 degrees Fahrenheit (20-25 C.). Best gunnera seed propagation is achieved in warmer temperatures. Bottom heat will speed germination. Remove the plastic or glass once every day to allow air into the area and mist to keep moist.[图片]Follow-up Care When Growing Gunnera Seeds Germination is generally quite quick, within 15 days, but may take up to 60 days. Thin is necessary and grow the seedlings on in their flat until two pairs of true leaves appear. Then transplant to 2-inch pots filled with good compost. Keep them moistened and provide ventilation in a warm area of the home, garden or greenhouse. Lighting should be bright but not scorching. It is important to not let the seedlings dry out. Give seedlings a liquid diluted fertilizer once per month during the growing season. Do not transplant outdoors until young plants are a year old. Protect plants in the garden from freezing. In a few years you, will have your own giant gunnera plants, a sight which will amaze and awe your friends and family.

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