Bonsai Training Information

Crataegus monogyna
Hawthorn, May Whitethorn, Single Seed Hawthorn

A deciduous small tree to twenty feet, with clusters of white flowers in mid-spring, small red berries in autumn, lasting to late winter. The small leaves are divided into three to seven lobes. The branches have stout spines, and the trunk has pale gray, flacky to gnarled bark. Is a popular Bonsai species and easily available.


Formal upright, Informal Upright, Slanting, Cascade, Semi-cascade, Broom, Rock-over-root, Clasped-to-rock, Twin-trunk, Clump, Group planting, Saikei




Full sun, partial shade in the hotest part of midsummer. Most hawthorns dislike extreme heat. They are resistant to windy conditions.


Generous - do not allow the soil to dry out completely. Increase the amount of water in the summer.


Every 14-30 days from spring-autumn, stopping for a month in midsummer. Use half-strength plant food or bonsai feed.

Leaf and Branch Pruning:

Prune back shoots to the first two leaves as necessary. Hawthorn grows quickly and needs constant pruning to keep it under control. The best time for major branch pruning is before the leaves come in to allow you to see an define the tree structure.

Re-potting & Growing Medium:

Every 2-3 years in early spring or autumn. Always leave a strong root system. Up to 1/3 of the root mass may be removed if the tree is a strong grower, but hawthorns are sometimes prone to rooting problems. Use 2 part loam, 2 part peat and 1 part sharp sand.


May be wired during spring and summer.


Remove faded fruits and flowers; it may be necessary to remove some of the fruit from young bonsai to prevent the plant from exhaustion.

More Images:

Print Bonsai Care Guide for Crataegus monogyna