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By DIANE RELF
Extension Consumer Horticulturist
Gardeners who follow general maintenance and cultural steps to keep their trees and shurbs healthy are also reducing the need for spraying because healthy plants are less susceptible to insects and disease.
Pruning, Fertilizing, and
Watering Are Needed
Pruning maintains plant health by eliminating dead, dying, or diseased wood. Any dying branch or srub can be the entry point or buildup chamber for insects or fungi that spread to other parts of the plant.
When removing wood infected with a disease, such as a fungal canker or fire blight, make the cut in healthy wood beyond the point of infection. Sterilize the blades of the pruning tool with alcohol after pruning to prevent spread of disease. Clean and oil pruning tools regularly, including wiping an oily cloth on blades and other surfaces. Keep cutting edges sharp.
The development of a sound framework of branches will help prevent upper branches from shading out lower branches on the plant. It Will prevent wounds from rubbing branches and will reduce potential for branch splitting^ due to ice or wind.
Broad-leaved evergreen shrubs usually will benefit from an occasional thinning of foliage. This thinning will allow penetration of light .and air throughout the shrub, resulting in even growth of the foliage.
Fertilizers add elements essential for healthy growth. To ensure tree vigor, fertilize as required and maintain the optimum pH for the tree or shrub. Keep soil free of compaction so roots can get water and essential elements.
Take Care of Law n and It Takes
Care of Nearby Trees
qp A well fertilzed lawn provides adequate fertilizer for the trees it surrounds or borders. On mature trees and shurbs, maintain the existing growth without overstimulating new growth by feeding every two to four years. Simply broadcast the desired fertilizer on the soil or turf surface
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