Trees should be mulched, to con- serve moisture, increase aeration, reduce soil temperature and add organic matter to soil. It requires several months for newly transplanted trees to grow an extensive root system during which the tree must be watered frequently especially d u r i n g drought periods. After a strong root system has developed, trees are usually able to grow during droughts, but for best results do not allow them to wilt from lack of water. Thorough watering to root system depth and below is better than light frequent watering which encourages undesirable shallow root development. Trees that have been growing in the shade in woods or in nursery rows and are transplanted to full sun areas should be protected by wrapping trunks. Use tree wrap, paper or Spanish moss for a year after transplanting to prevent sun- scald. Remove wrap the following fall or winter. This protection also can be provided by leaving twigs and small branches scattered along trunks. Transplanted trees should be staked for at least the first year to prevent root injury from wind movement. Fertilization. Trees in land- scape plantings are usually handi- capped in securing nutrients from the soil. This is due, in part, to proximity of pavements, soil com- paction, competition with turf, and the practice of removing leaves and other litter which would later have some fertilizing value. Trees should be fertilized regularly to make vigorous growth under such conditions. Organic and inorganic forms of fertilizers are acceptable for use on ornamental trees. Organic forms last longer but are more expensive than inorganic forms. Fertilizer containing nitrogen, phosphorus and potassium in an equal ratio (such as 6-6-6 or 8-8-8) is recommended for trees. Fertilizer recommendations are based on tree size as measured by trunk diameter 4 feet above ground level. For trees with a trunk diameter of less than 6 inches apply 21/ pounds of an 8- 8-8 or 3 pounds of a 6-6-6 per inch of diameter each year. Trees with a trunk diameter over 6 inches should receive 4 pounds of an 8- 8-8 or 5 pounds of a 6-6-6 per inch of trunk diameter each year. Apply fertilizer in late fall after trees are dormant or in early spring before growth starts. Young trees should be fertilized more fre- quently, but yearly rates should not exceed those listed. The year- ly amount can be split into 2 or 3 applications made in spring and fall, or in spring, summer and fall. Fertilizer should be distributed evenly under the tree canopy be- ginning about 1 foot from the trunk to about the edge of the canopy. Trees growing in lawns may be fertilized without seriously dis- turbing grass by making holes with a crowbar or similar tool be- neath the drip line of the tree. Holes should be a foot or more deep, about 2 inches in diameter, and spaced as close together as needed to obtain uniform and ade- quate distribution. After fertilizer is placed in them, the holes may be closed with the heel or filled with a small amount of soil.