Trees in the hawthorn family make excellent ornamentals in the home landscape, sporting white flowers in the spring and red or orange fruit that lasts through the winter. Hawthorn trees are a delight to have in the landscape because of their attractive shape, shade potential, and clusters of pink or white flowers that bloom in spring. Hawthorn trees need full sun and well-drained soil. They tolerate almost any type of soil and variations in pH. Set the trees out in spring so they’ll have a full season to become established before winter. In large settings they look great in groups, and they are pretty enough to stand alone as specimens in small gardens. Although they make great lawn and street trees, avoid planting thorny varieties where children play or where pedestrians pass. The thorns are fierce, and can be as much as three inches long. Water the trees during dry spells for the first year. Afterward, they are drought resistant. Feed hawthorns annually for the first three years with a balanced fertilizer and every other year thereafter.Hawthorn trees need little pruning. Remove suckers that arise from the base of the trunk. You can trim the canopy, if necessary, to keep it looking neat. Make cuts just beyond a lateral twig or bud that faces the direction in which you want the branch to grow. You might want to make routine spraying a part of your hawthorn tree care plan. Hawthorns are bothered by lace bugs, aphids, mites and scale, and these insects can get out of control unless you treat them early. Use a lightweight horticultural oil early in the season. You can damage the tree by spraying with horticultural oils at the wrong time, so read the label instructions carefully before spraying. Use a general-purpose spray labeled for hawthorn trees later in the season.