Hawthorn trees have many positiveness and negatives, but some of the biggest positives are their full-figure shape, they need little pruning and beautiful blooms in spring. They have year round interest with the flowers, but also in fall and winter because of the berries (which songbirds love). Hawthorn trees are susceptible to many diseases, some of which are fatal. "Winter King's" and "Washington's" tend to be the most popular and disease-free out of the bunch. They need full sun and well-drained soils, but they will tolerate any type of soil. Plant Hawthorn's in groups, although they can be pretty enough on their own.