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==News About Ginkgo== | ==News About Ginkgo== | ||
'''How to Prune & Care for a Maidenhair Tree''' | |||
*Source:http://homeguides.sfgate.com/prune-care-maidenhair-tree-57576.html | |||
:By Amelia Allonsy (Demand Media) | |||
The last surviving species of its genus, maidenhair tree (Ginkgo biloba) is often considered a living fossil because its present form is exactly the same as specimens that grew 230 million years ago. Now only naturalized in China, these trees are cultivated throughout the world and in U.S. Department of Agriculture plant hardiness zones 4 through 9. Maidenhair trees grow between 50 and 80 feet with butter-yellow fall foliage and are named for their fan-shaped leaves with hairlike veins. The trees adapt well to a variety of growing conditions and pruning requirements are light especially in young trees. | |||
:Planting and Care | |||
1 Amend soil with organic matter incorporated into the native soil with a tiller, if desired. Maidenhair trees adapt well to most soil types, but they prefer sandy loam or loam soil. If you have clay soil, you can work compost, manure, leaf mold, sand or other organic materials into the soil to improve the soil structure and increase porosity for better drainage. | |||
2 Select a male maidentree to avoid the offensive odor of dropped fruit that is characteristic of female trees. Cultivars including "Autumn Gold," "Fastigiata," "Princeton Sentry" and "Lakeview," available through nursery retailers, are grown as cuttings from male trees to ensure the gender. Ginkgo can take up to 20 years to fruit and indicate the female gender when grown from seed. | |||
3 Plant maidenhair trees in spring in a hole twice as wide and as deep as the root ball in a site in full sun that receives at least six hours of daily sunlight. Loosen the roots gently on the outside of the root ball and spread them evenly in the hole. Fill in the hole around the tree so the top of the root ball is flush with the surrounding soil. | |||
4 Water the tree regularly in the first year after planting until the tree becomes well established. Once or twice weekly watering is usually sufficient, but additional watering becomes necessary in hot summer months with little rainfall. Maidenhair tree is drought tolerant, but it will not tolerate wet feet so it is better to allow the top few inches of soil to dry out between watering than to risk root rot from over watering the tree. After the first year, you might only need to irrigate the tree during hot summer months. | |||
5 Keep a 5-foot diameter circle around the trunk free of grass and weeds to eliminate competition for water and nutrients. Apply a 3- to 4-inch layer of mulch over the bare area to prevent weeds. Keep an area about 6 inches from the trunk free of mulch to avoid rot and infestation. Replenish the mulch as it decomposes to maintain the 3- to 4-inch layer. | |||
6 Apply a complete fertilizer, containing nitrogen, phosphorous and potassium, a few weeks after planting and each year in early spring to encourage fast growth. Application rates vary depending on fertilizer ratios and concentrations, so follow package directions for specific application information. Alternatively, you can use finished compost and dried manure, which doubles as organic fertilizer, as mulch around the tree. | |||
:Pruning | |||
1 Disinfect pruning tools in a diluted chlorine bleach solution, mixing one part bleach with nine parts water in a spray bottle. Use bypass pruners for small branches, lopping shears for medium branches and a pruning saw for larger branches. | |||
2 Select one central leader at planting, choosing the strongest, best-placed vertical branch and eliminating any other upright branches. Depending on the size of the tree, you might need to stake the central leader to help its upright growth. In some cases, the transplant has only one vertical branch, so this step is not necessary. | |||
3 Eliminate any rubbing or crossing branches as the tree grows to encourage an open framework of branches. This should be done annually in late winter maintenance pruning, whether training a new tree or maintaining an ancient specimen. | |||
4 Cut back any drooping branches that hang low enough to interfere with walkways or driveways. Make the cut back to a branch union to avoid leaving a noticeable stub. Older maidenhair trees droop naturally as a response to the branch weight. You can leave the drooping branches in place if they do not interfere with access to the tree or other parts of your yard. | |||
5 Remove dead branches as they occur. Cut secondary branches back to the point of intersection with the parent branch. Cut entire limbs back to the trunk, cutting just outside the branch collar tissue ring that surrounds the joint. If branches are larger than 2 inches in diameter, use a three-cut pruning method. Make a cut about one-third of the way through the underside of the branch about 12 inches out from the trunk; make a second cut straight down through the branch about 1 inch out from the first cut; make the third cut just outside the branch collar. | |||
6 Cut any diseased branches about 6 inches outside the diseased area. Disinfect pruning tools immediately after cutting diseased branches. | |||
:Things You Will Need | |||
:• Tiller | |||
:• Organic matter (optional) | |||
:• Shovel | |||
:• Mulch | |||
:• Complete fertilizer | |||
:• Bypass pruners | |||
:• Lopping shears | |||
:• Pruning saw | |||
:• Chlorine bleach | |||
:Tip | |||
:• Pruning and care needs are minimal for maidenhair trees, making them a top choice for a low-maintenance garden. | |||
:• While many find the pyramidal shape of maidenhair trees to be attractive, more adventurous gardeners could train a maidenhair tree as an espalier to cover an ugly exterior wall. | |||
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'''What Are the Health Benefits of Ginkgo Leaf Powder?''' | '''What Are the Health Benefits of Ginkgo Leaf Powder?''' | ||
*Source:http://healthyeating.sfgate.com/health-benefits-ginkgo-leaf-powder-10921.html | *Source:http://healthyeating.sfgate.com/health-benefits-ginkgo-leaf-powder-10921.html | ||