Crataegus monogyna
The Hawthorn is Native to Europe, Western Asia and North-West Africa. A small deciduous tree growing to about 8 meters, with clusters of white to pink flowers in May and June, followed by red berries, called Haws. The leaves are deeply lobed to between 3 to 7 the branches are spiny, and the bark is pale and flaky.
Styles and Sizes: The Hawthorn can be grown in just about any style from small to large-sized bonsai.
Position: Most hawthorns dislike extreme heat, and the leaves singe regularly, so they are best grown in a semi-shade aspect especially in summer.
Watering: Hawthorns are thirsty plants so water and use copious amounts of water, so water generously and thoroughly. Best water early in the morning when the bonsai need the water the most.
Feeding: Use a balanced organic balanced feed, apply every two weeks if using a liquid fertiliser, every two months if using a granular form.
Repotting: Young Hawthorn’s roots multiply rapidly and are best repotted every year. Older trees can be re-potted as necessary, generally, if the growth in the current year is not as healthy as it can be, it will benefit from a repotting in the following spring. Use a well-mulched bark, sharp sand, in equal parts. Alternatively, use a mix of Akadama, Pumice in equal parts.
Pruning: Trim back shoots to leave 3 lateral shoots or active leaf nodes. It is wise to make substantial pruning cuts late in the season when the sap begins to run. To ensure that fruit and flowering development does not impede the overall growth of the bonsai it is advisable to remove the majority of fruits, leaving only a few strategically placed fruits for aesthetic purposes.
Wiring: Wire sparingly and with care, in autumn and wire should be kept on only until the growing season begins.