Length of Life for Citrus Trees

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Citrus trees are generally considered "long-lived" plants, but this term could mean anything from 20 years to centuries. The number of varieties of citrus trees expands every year, with new crosses and species created by science and agriculture professionals. Botanists believe citrus trees date back

Flowering Dogwood Shrub

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Classified as a multiple-branched shrub and ornamental tree, flowering dogwood is native to most of the eastern United States. In the wild, you can find dogwood shrubs growing under pine trees or at the edges of a forest with other deciduous trees. The leaves of the flowering dogwood that fall to th

How to Use Oasis Floral Foam

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When it comes to flower arranging, you need two things to make the arrangement look right: a water supply and a sturdy base. Smithers makes a product that combines the two into a single piece of material, and is a staple for professional florists all over the world. This product is Oasis Floral Foam

What Causes a Lilac Shrub to Die?

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Lilac bushes and trees are extremely hardy. Lilac bushes can withstand a wide range of soil conditions, drought-like situations and cold climates. With over 10 species and numerous cultivars exhibiting a variety of bloom colors from white to magenta, and growth habits from tree forms to low shrubs,

Can You Mow Sweet Potato Vine?

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Purdue University's Cooperative Extension Office reports that sweet potatoes should not be grown on the same site more than once every three to four years. Removal of the vines by mowing is one way to stop the growth of the plant for the following season.

How to Get Cyanide Out of Water

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Cyanide is a poisonous metal associated with pollution from mills, mines and chemical plants. Water also can become contaminated with cyanide from from landfills and road salts. The Environmental Protection Agency recommends three treatments for removing cyanide from water. Two methods, ion exchange

How Much of a Root System Do Grapes Have?

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Grapevines are beautiful plants and provide privacy and shelter for birds and animals. The real treat, though, is the fruit, which is used for fresh eating or for making juice or wine, depending on the variety. Grapevines produce long roots that allow them to tolerate periods of drought and infertil

Perennial Phlox in Zone 6

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Perennial phlox not only come in erect forms that grow to heights of 4 and 5 feet, the plants also occur in low-growing and spreading forms, suitable for such landscape applications as ground cover. Even in U.S. Department of Agriculture plant hardiness zone 6, where winters sometimes feature lows a

Pests of Climbing Roses in Alaska

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The insects that generally infest roses also affect roses growing in Alaska. It makes little difference whether the rose is a climbing variety or shrub type, because these insects are equal-opportunity pests.

How to Fertilize an Astilbe

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Astilbe plants are also called false spirea and false goat's beard. The showy plumes, which are feather-like in appearance, present themselves atop sturdy stems during the summer months. Astilbe flowers come in many colors, such as purple, white, pink and red. The foliage has a fern-like appearance,

Propagation of a Crape Myrtle From Seed

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Crape myrtle is a genus of flowering shrub of the genus Lagerstroemia. Plants vary in size from 2 to 28 feet in height, depending on the species. There are 55 species in the genus with horticulturalists continually producing new varieties and hybrids. The plants produce large, colorful flowers throu

Apple Trees With White Powder on the Leaves

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Powdery mildew is a common fungal problem that can be found on the leaves of both fruiting and flowering apple trees. It presents as a white to gray mycellium on both sides of the leaves. It is most prevalent when temperatures are warm and humidity is above 70 percent. If unchecked, the diseases can

Hardiness Regions for Perennial Flowers

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The United States Department of Agriculture (USDA) established plant hardiness zones in the late 1980s to aid in choosing the appropriate plants for your particular region. These zones are categorized by how cold the temperatures get during the winter season. As of 2011, there are 20 different, numb

What Vegetables Can I Grow in the Winter in Zone 5 With Protection?

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Cold frames offer an additional layer of protection for winter vegetables.Traditional cold frame image by Shirley Hirst from Fotolia.comMost cool season vegetables will grow outdoors during the winter in zone 5 with protection. Row covers and cold frames are essential to winter gardening....

How to Plant Fast-Growing Vegetables

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Summer vegetable gardens may thrive throughout the country, but they're unquestionably easiest in warm growing zones. Early springs mean early plantings, while long growing seasons mean that gardeners can plant almost anything they want. Gardeners in colder growing zones, where late spring and early

How to Train a Spiral Tree Topiary

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A spiral topiary is a living art form grown using ivy or other evergreens that are typically dense and fast growing. They are grown over pre-shaped frames where they are trained to grow into a shape of your choice to produce a unique and decorative design. Pre-shaped topiary forms are available in

How to Grow Pieris Japonica

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Pieris japonica, also called Japanese Andromeda, is native to Japan, Taiwan and eastern China. It is a slow-growing evergreen shrub that produces cascading clusters of tiny, white and urn-shaped flowers in March and April. These plants make excellent border shrubs and remain attractive all year long

How to Identify Trees With Dark Red Leaves

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Deciduous tree leaves turn red in the fall because the parent tree doesn't produce enough chlorophyll to keep them green. This condition causes pigments called anthocyanins to change the color of the leaves from green to the fall foliage colors. The shade of red varies, depending on the type of tree

Clover Weed Problems

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Although many regard it as a weed, white clover can actually be beneficial for the health of your lawn. Clover is a nitrogen-fixing plant, and can thus provide nitrogen to the soil of a lawn without the use of chemical fertilizers. Many grass seed mixes include a small percentage of clover in their

What Pine Has Three Cluster Needles?

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Pine trees bear clusters of narrow, needle-shaped, evergreen leaves. The needles do not live forever; the oldest ones drop every year, but younger needles remain behind, so the annual leaf drop is not noticeable. On genuine pines, the needles are arranged along the branches in bundles of two, three