Plant hawthorn in spring or early fall. Choose a location with well-drained, moderately fertile soil. Drainage is especially important because hawthorn does not grow well with wet feet. Hawthorn will grow in a variety of soil types and is tolerant of salt, sand clay, alkaline and acidic soils.
Make sure your hawthorn has ample sun exposure. Hawthorn will grow in partial shade, but will be denser, produce more flowers and bear more fruit in full sunlight.
Water as needed to keep the soil moist, but do not overwater. The soil around your hawthorn should never be allowed to become wet and waterlogged. Hawthorn is fairly drought-tolerant once established.
Keep an eye out for pests and diseases as your hawthorn grows. Hawthorn generally will be healthy if you plant it in the right conditions, but may still be susceptible to rust, leaf spot, canker, aphids and a handful of other problems, which must be treated as they arise.
Do not prune hawthorn unless necessary. This plant seldom needs pruning, but an occasional stray shoot may need attention. If you do prune your plant, the best time is just after it finishes blooming.