Japanese Hawthorn, Ye Shan Zha, Shan Zha
This almost lobe-less version of Hawtorn, is native to China and is poularly cutivated in Japan for its flowers and fruits, which are also slighty larger than the european or English AHwtorn, more like 2cm while the european Haws are generally around 1cm. It makes a striking and durable bonsai.
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 prone to rooting problems so ensure a well drained mix is used. Use 3 Part Akadama and 1 Part Pumice.
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.