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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Tamarack tree planting is not difficult, nor is care for tamarack trees once they are established. Read on for information about how to grow a tamarack tree.
Tamarack Tree Information Tamaracks (Larix laricina) are medium-sized deciduous conifers that are native to this country. They grow wild from the Atlantic all the way across to central Alaska. If you look for tamarack tree information, you may find it under other common names for this tree, like American larch, eastern larch, Alaska larch or hackmatack. Given the huge range of the tamarack, it tolerates extremely varied climatic conditions, from -30 degrees to 110 degrees Fahrenheit (34 to 43 C.). It can thrive in regions where rainfall is only 7 inches annually and also where it is 55 inches annually. That means that wherever you live in the country, growing tamarack trees may be possible. The trees also accept varied types of soil. However, tamaracks grow best in wet or at least moist soil with a high organic content like sphagnum peat and woody peat. They thrive on moist, well-drained loamy soils beside rivers, lakes or swamps.
Tamarack Tree Planting Tamaracks are attractive trees with needles that turn brilliant yellow in autumn. These trees could be used as ornamentals far more than they are currently. If you are interested in tamarack tree planting, sow the seeds in warm, moist organic soil. Be sure to clear all brush and weeds before you begin. Your seeds need full light to germinate. In nature, germination rates are low since rodents feast on the seeds, but in cultivation, this should be less of a problem. Tamaracks do not support shade, so plant these conifers in open areas. Space the trees well apart when you are doing tamarack tree planting, so that the young trees do not shade one another.
How to Grow a Tamarack Tree Once your seeds become seedlings, be sure to provide a constant water supply for them. Drought conditions can kill them. As long as they have full light and regular irrigation, they should thrive. If you are growing tamarack trees, you will find that they grow fast. Correctly planted, tamaracks are the fastest growing boreal conifers for their first 50 years. Expect your tree to live between 200 and 300 years. Care for tamarack trees is easy, once they are correctly established. They require virtually no work other than irrigation and keeping down competing trees. The greatest threat to the health of the trees in the wild is destruction by fire. Because their bark is so thin and their roots so shallow, even a light burn can kill them.
The tamarack foliage can be attacked by the larch sawfly and the larch casebearer. If your tree is attacked, consider biological control. Parasites of these pests are now available in commerce.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
The Katura tree is a wonderful ornamental plant for cold to temperate regions. Although this is a low maintenance plant, a little information on how to take care of a Katsura tree will help you keep it healthy and strong as an attractive presence in your landscape.
About Japanese Katsura Trees The grown up name for Katsura tree, Cercidiphyllum, refers to a genus of trees from Asia, in particular Japan and China. The trees are suited for moist soil in full sun and get no larger than 45 feet tall. In fact, the majority of the trees are almost better classified as big bushes rather than trees. While there are other varieties, Katsura tree (Cercidiphyllum japonica) is one of the most popular landscape trees. This type hails from Japan and is an economically important deciduous forest tree. The leaves are multi-hued with heavy veins and tones of pink and green. In fall the heart-shaped leaves take on autumnal tones of gold, orange and red before they fall from the tree. Katsura flowers are tiny, white and insignificant, but the foliage has a strong brown sugar smell in fall, which adds to the tree’s appeal. An interesting fact about Katsura trees is that the botanical name translates to ‘red leaf.’
Growing Katsura Trees Katsura trees will thrive in USDA plant hardiness zones 4b to 8. They need plenty of water at establishment, but once they are mature can handle short periods of drought. Plant the tree in well drained soil that is acid or neutral. The plant is sensitive to frost and does drop its leaves once cold temperatures arrive. Choose either full sun or light shade for growing Katsura trees. The trees are weak limbed, so a sheltered spot is preferable with protection from wind gusts. Pruning is not a necessary part of Katsura tree care, but you can remove any damaged or crossed limbs that prevent the tree from producing a strong scaffold.
How to Take Care of a Katsura Katsura trees are slow growing and may take up to 50 years to reach their full size. During this time, if the tree was planted in an appropriate soil and site, it will need very little care. Katsuras are not susceptible to many pests and they are basically disease free. Avoid overhead watering to prevent mildew on the ornamental leaves. Spread mulch around the base of the tree out to the root line to minimize competitive weeds and enhance water conservation.
Lightly prune out suckers and dead wood in spring and apply a 10-10-10 balanced granular fertilizer to the root zone of the plant. Water the fertilizer in well. Young Katsura tree care requires tree wraps and slings to protect the thin bark and establish a firm, strong shape. Water the tree daily for the first year to increase health and growth.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Jatropha (Jatropha curcas) was once touted as the new wunderkind plant for biofuel. What is a Jatropha curcas tree? The tree or bush grows in any type of soil at a rapid rate, is toxic and produces fuel fit for diesel engines. Read on for more Jatropha tree info and see how you rate this plant.
What is a Jatropha Curcas Tree? Jatropha is a perennial shrub or tree. It is drought resistant and easy to grow in tropical to semi-tropical locations. The plant lives for up to 50 years and may grow nearly 20 feet tall. It has a deep thick taproot which makes it adaptable to poor dry soil. The leaves are oval and lobed and deciduous. Overall, the plant is not particularly visually appealing but it does get attractive green cymes of flowerets which turn into a tri-compartment fruit with large black seeds. These large black seeds are the reason for all the hullaballoo, because they are high in burnable oil. An interesting piece of Jatropha tree info is that it is listed as a weed in Brazil, Fiji, Honduras, India, Jamaica, Panama, Puerto Rico and Salvador. This proves how adaptable and hardy the plant is even when introduced to a new region.
Jatropha curcas cultivation can produce oil that is a good substitute for current biofuel. Its usefulness has been challenged but it is true the plant can produce seeds with an oil content of 37%. Unfortunately, it is still a part of the food vs. fuel debate, as it requires land that could go into food production. Scientists are trying to develop a “super Jatropha” with bigger seeds and, therefore, bigger oil yields.
Jatropha Curcas Cultivation Jatropha uses are rather limited. Most parts of the plant are toxic to eat due to the latex sap, but is used as a medicinal. It is useful in treating snakebite, paralysis, dropsy and apparently some cancers. The plant may have originated in Central to South America but has been introduced around the world and flourishes wild in places like India, Africa and Asia. Chief among Jatropha uses is its potential as a clean burning fuel to replace fossil fuels. Plantation cultivation in certain areas has been attempted, but overall Jatropha curcas cultivation has been a dismal failure. This is because the production mass of oil cannot equal the land use by cropping Jatropha.
Jatropha Plant Care and Growth The plant is easy to grow from cuttings or seed. Cuttings result in faster maturity and quicker seed production. It prefers warm climates but can survive a light frost. The deep taproot makes it drought tolerant, although best growth will be achieved with supplemental water occasionally. It doesn’t have any major disease or pest issues in its natural regions. It may be pruned, but flowers and fruit form on terminal growth, so it is best to wait until after flowering. No other Jatropha plant care is necessary.
This plant is useful as a hedge or living fence, or just as an ornamental stand alone specimen.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Japanese snowbell trees are easy to care for, compact, spring-blooming trees. Because of all these things, they are perfect for moderate sized, low maintenance beautifying in places such as parking lot islands and along property borders. Keep reading to learn more Japanese snowbell information, such as planting Japanese snowbell trees and subsequent Japanese snowbell care.
Japanese Snowbell Information Japanese snowbell trees (Styrax japonicus) are native to China, Japan, and Korea. They are hardy in USDA zones 5 through 8a. They grow slowly to a height of 20 to 30 feet, with a spread of 15 to 25 feet. In late spring or early summer, usually in May and June, they produce mildly fragrant white flowers. The flowers appear in clusters of small five petaled bells the show up very clearly as they hang down below the upward growing foliage. The flowers are replaced in summer by green, olive-like fruits that are long lasting and pleasant. Japanese snowbell trees are deciduous, but they’re not especially showy in the fall. In autumn, the leaves turn yellow (or occasionally red) and drop. Their most impressive season is spring.
Japanese Snowbell Care Caring for a Japanese snowbell tree is very easy. The plant prefers partial shade in the warmer zones of its hardy climate (7 and 8), but in cooler areas, it can handle full sun. It does best in somewhat acidic, peaty soil. The ground should be kept moist with frequent watering, but not allowed to get soggy. Only some varieties are hardy down to zone 5, and they should be planted in a spot that’s sheltered from the winter winds.
Over time, the tree will grow up into an attractive spreading pattern. No real pruning is required, though you will probably want to remove the lowest branches as it matures to make way for pedestrian traffic or, even better, a bench underneath it.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Japanese cedar trees (Cryptomeria japonica) are lovely evergreens that become more splendid as they mature. When they are young, they grow in an attractive pyramid shape, but as they grow older, their crowns open further to form a narrow oval. The trunk is straight and tapered with spreading branches that droop toward the ground as the tree develops. Read on for Japanese cedar tree facts including how to care for Japanese cedar.
Japanese Cedar Tree Facts Japanese cedar trees have many ornamental features. Their short, shiny needles are an eye-catching shade of blue-green, arranged in spirals pointing toward the tip of the stems, like foxtails. The foliage bronzes in winter. The wood is fragrant, waterproof, light and resilient. They can live over 600 years. Japanese cedar facts include information about the mahogany colored bark. It peels off in long strips, making the tree ornamental all year long. When you are planting Japanese cedar, remember that the species tree can get to 80 or even 100 feet tall and 20 to 30 feet wide. Their size makes them excellent for windscreens, borders and groupings on large properties. A single tree can also work on smaller properties because of its relatively narrow canopy and slow rate of growth.
Planting Japanese Cedar When you are planting Japanese cedar, select a site that offers moist, acidic, well-drained soil. Ideally, Japanese cedar trees prefer full sun locations, but they also tolerate partial shade. Choose a location with has some air circulation to combat diseases like leaf blight, but don’t pick a site that is exposed to strong winds.
Japanese Cedar Tree Care and Pruning If you are wondering how to care for Japanese cedar, it isn’t difficult. You’ll want to water your Japanese cedar in dry weather. Irrigation is important to keep them alive and looking their best during drought. You can prune off any dead or broken branches to keep the tree’s shape attractive but, otherwise, annual pruning is not required for the health or structure of the tree.
If your yard is small, don’t plan on pruning Japanese cedar to make a tall tree work in a small space. Instead, plant a dwarf cultivar like ‘Globosa Nana,’ a compact tree that grows to 4 feet tall and 3 feet wide.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
What is Indian rosewood? Yes, it’s that prized cabinet wood used to make fine furniture, but it’s also a very handsome shade tree with a fragrance that will turn your backyard into a sensory delight. If you are thinking of growing an Indian rosewood (Dalbergia sissoo), you’ll need to learn in advance the requirements for Indian rosewood care. Read on for other Dalbergia sissoo information and tips about inviting Indian rosewood trees into your garden.
What is Indian Rosewood? Before you decide to plant Indian rosewood trees, you might ask: what is Indian rosewood? It’s a tree native to the Indian subcontinent. Its scientific name is Dalbergia sissoo, and it’s rich in common names too, including Dalbergia, Himalaya raintree and penny leaf tree. Dalbergia sissoo information tells us that rosewoods are attractive deciduous trees growing vigorously to some 60 feet tall and 40 feet wide. They do best in USDA hardiness zones 10 and 11, but can also be grown in zone 9 after establishment.
Growing an Indian Rosewood Why grow an Indian rosewood tree? Many gardeners appreciate the rosewood trees for their powerful fragrance. The trees fill with tiny flowers in the springtime, inconspicuous in appearance but bearing a very strong, sweet fragrance. The flowers are followed by interesting pods, slender, flat and brown. The wood is prized for making fine furniture.
Indian Rosewood Care If you start growing an Indian rosewood, you’ll find that the trees are not high maintenance. Indian rosewood care won’t take too much of your time. In fact, Dalbergia sissoo information notes that rosewood trees grow so readily that they are considered invasive in some parts of Florida. Plant Indian rosewood trees in a full sun area or under high shade. These trees tolerate a vast range of soil types, from very dry to very wet. Provide your tree with adequate irrigation when you plant it, and keep it up until the roots are well established.
Prune the tree into a well-formed, single leader tree. The wood is known to be brittle, so prune out branches with tight branch crotches to prevent them from breaking off down the road and injuring the tree.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
For additional interest in the landscape, consider growing horse chestnuts. They’re perfect for adding drama either standing alone as a specimen planting or among other tree as a border planting.
What are Horse Chestnuts? You may be wondering, What are horse chestnuts? Horse chestnuts (Aesculus hippocastanum) are large flowering trees, similar to buckeyes, with showy, white blooms in spring. These are followed by attractive, spiny, green seedpods from midsummer through fall. In addition to their beautiful flowers and seedpods, horse chestnut trees also exhibit interesting bark with twisted limbs. One note of caution: do not confuse these ornamental tree with other chestnut trees (Castanea genus), which are edible. The fruit of horse chestnuts should not be eaten.
Growing a Horse Chestnut Tree The most important factor when growing a horse chestnut tree is location. Horse chestnuts thrive in USDA plant hardiness zones 3-8 in areas having full sun and well-drained, but moist, humus-rich soil. These trees do not tolerate excessively dry conditions. Horse chestnut trees are usually planted in spring or fall, depending on climate. Since they are normally purchased as container or burlapped plants, the planting hole should be about three times their width and deep enough to accommodate them with the top of the rootball flush with the soil.
Once the tree is placed in the hole, ensure it is straight before adding some of the soil to anchor it in place. Fill the hole with water, allowing it to absorb before adding organic matter and remaining soil. Tamp down lightly to eliminate any air pockets and add a layer of mulch to help retain moisture and keep out weeds. Water newly planted trees regularly. Established trees require little care other than occasional pruning in late winter as needed.Growing Horse Chestnut Seeds or Conkers The horse chestnut can also be grown from seeds or conkers. The spiny seedpods drop from the tree in fall when ripened and crack open to reveal the horse chestnut seeds inside. Horse chestnut seeds should be planted as soon as possible. Do not allow them to dry out. They also germinate rather quickly and are best sown outdoors in a cold frame. They can also be placed in a plastic bag outside for a couple of weeks. Once roots begin sprouting, plant them in pots of composted soil. Horse chestnut seedlings can be planted in their permanent locations the following spring or fall, or whenever they reach about a foot or so tall.
Growing a horse chestnut tree is easy and well worth the little effort involved. The tree makes a wonderful addition to the landscape for years of enjoyment.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Hemlock trees are a popular conifer that is commonly used as either privacy shrubs or as visual anchor trees in the landscape. Most of the time, pruning hemlocks is not necessary, but occasionally weather damage, disease or competing main trunks on upright hemlocks can create the need for pruning hemlocks. Keep reading to learn how and when to prune hemlocks.
When to Prune Hemlocks If you find that you need to prune your hemlock tree, the best time for trimming hemlocks is in either spring or early summer. At this time, the tree is getting ready for or is already in active growth and will recover quickly from any hemlock pruning that needs to be done. In the fall and winter, hemlocks are preparing to go dormant and are hardening themselves to be able to withstand the cold of winter. Pruning hemlock trees in fall or winter can confuse the tree, causing it to return to active growth rather than dormancy. At best, the new growth it does produce will be killed off in the cold and, at worst, the entire tree will be unable to withstand the winter cold and the entire tree will die.
How to Prune Hemlock Trees Trimming Hemlock to Correct Damage from Weather or Disease High winds or heavy snows can sometimes damage the branches of a hemlock and you may need to prune the tree in order to remove some of the damage or to help reshape the hemlock. Disease may also kill back some of the branches on the tree and you will need to remove the diseased branches. The first step in pruning hemlocks is use a clean, sharp pair of pruning shears or pruning saw, depending on the size of the branches you need to prune. Clean and sharp pruning tools will help to prevent disease.
The next step in trimming hemlock branches is to select which branches need to be removed. Select the branches before you start trimming so that you do not over prune the tree accidentally. Then make your pruning cuts just above the needle whorls. Hemlock trees will grow new branches from the needle wholes and pruning just above them will ensure that the new branches come in properly. If damage to the hemlock tree is extensive, severe pruning may be needed. Hemlock trees can withstand severe pruning and will recover from losing as much as 50% of its branches.
Pruning Hemlocks to Remove Competing Main Trunks Upright hemlock varieties look best when they have only one main trunks, so home owners often want to remove secondary upright trunks that may start to grow. These secondary trunks can be pruned back to their starting point on the main trunk or can be cut at any point along the trunk to stop its upward growth and encourage side growth instead.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
Hemlock woolly adelgids are small insects that can seriously damage or even kill hemlock trees. Is your tree at risk? Find out about hemlock woolly adelgid treatment and prevention in this article.
What are Woolly Adelgids? Only about a sixteenth of an inch long, woolly adelgids (Adelges tsugae) have a huge impact on hemlock trees in the eastern part of North America. Their feeding practices cause needles and branches to brown and die, and if the infestation is left untreated, the tree starves to death. Here are some interesting facts about these tiny pests: All woolly adelgids are female. They reproduce asexually. As they feed, they secrete waxy filaments that eventually cover their bodies. These filaments give them their “woolly” appearance. The woolly coat protects the insects and their eggs from predators. Woolly adelgids sleep through the summer and are active when temperatures cool.
Hemlock Woolly Adelgid Damage The woolly adelgid is an aphid-like insect that can grow and reproduce on all types of hemlocks, but only the eastern and Carolina hemlocks decline and die from an infestation. Watch closely for hemlock woolly adelgid damage. Early detection gives your tree a much better chance of survival.
The insects feed by sucking sap from hemlock needles, and the needles die one by one. If nothing is done to stop the infestation, the entire branch may die. Here is a season-by-season list of danger signs: In spring, you may see orange-brown eggs when you look closely at the base of the needles. In early summer, the eggs hatch and upon close inspection you may be able to see tiny, reddish-brown, crawling insects. Summer is the easiest time to spot the insects. They go dormant during the heat of summer, but first they spin little white nests of a waxy, wooly-looking substance. The nests are much easier to see than the insects themselves. Woolly adelgids come out and begin feeding again in fall and winter.
Woolly Adelgid Control The best treatment of woolly adelgids on a small tree is to spray the tree with horticultural oils. Spray in spring after the eggs hatch but while the insects are still crawling, and follow the label instructions. This method won’t work on large trees. They should be treated with a systemic insecticide by injection or soil treatment. These are short-term solutions.
The treatment must be repeated every year. There are no good organic treatment methods, but scientists are working with some of the woolly adelgid’s natural enemies to see if they can be used to protect hemlock trees.
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Dummer. ゛☀
2017年08月31日
Dummer. ゛☀
If you are thinking of planting a Canadian hemlock tree in your garden, you’ll need information on the tree’s growing requirements. Read on for Canadian hemlock tree facts, including tips for Canadian hemlock care.
Canadian Hemlock Tree Facts Canadian hemlock (Tsuga canadensis), also called eastern hemlock, is a member of the pine family and native to North America. You’ll see the trees in the wild growing on woody slopes, rocky ridges, and river valleys from eastern Canada south to Georgia and Alabama. They have a slow to medium growth rate of up to 24 inches a year, maturing to 50 to 70 feet tall and 25 feet wide. Don’t worry about their roots. According to Canadian hemlock tree facts, the roots are not likely to invade pipes or raise sidewalks. If you are hesitant to plant this tree because you know hemlock is poisonous, stop worrying. No part of the Canadian hemlock is poisonous. The poisonous hemlocks you have heard about are perennial plants in the parsley family.
Canadian Hemlocks in the Landscape Canadian hemlocks in the landscape have flat sprays of lacy evergreen foliage and graceful, pyramid shapes. Their elegance makes them excellent choices for specimen trees. However, the trees are very tolerant of shearing. This means that you can also keep them short or use them for privacy screens. When you are thinking about planting a Canadian hemlock tree, it’s important to make sure you live in a region where the species can thrive. In general, this species does well in cooler to cold climates, and thrives in U.S. Department of Agriculture plant hardiness zones 3 through 7.
If you are planting a Canadian hemlock tree, look for a site that offers some shade. The trees prefer partial shade, especially in areas with hot summers, but do require daily direct sun. If your region gets strong winds, pick a planting spot with wind protection. To offer the best Canadian hemlock care, plant your tree in well-drained loam or sand. The soil should be acidic rather than alkaline.
Care for Canadian Hemlock Trees If you’ve been careful about your planting location, care for Canadian hemlock trees is not difficult. The most important part of Canadian hemlock care is proper irrigation. When the tree is young, it will require regular watering. As it matures, it still requires frequent irrigation during dry weather. Canadian hemlocks are not very drought tolerant. Care for Canadian hemlock trees can also require regular pruning if you wish to keep the tree a particular size or shape. It is not necessary for the trees’ health, however. Although these trees are hardy to zone 3, their roots do better with protection against winter chill. The best care for Canadian hemlock trees includes applying a thick winter mulch.
If you live in Virginia, Maryland or Pennsylvania, or other areas where infestations of woolly adelgid have been severe, remain vigilant. These are tiny, sap-sucking insects that can kill Canadian hemlocks. Treatment includes pesticides containing imidacloprid or dinotefuran.
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