Pyracantha coccinea (firethorn)
When repotting this species we have to remain aware that removing a big root at once can cause a portion of the trunk or entire branches to die. To avoid this a root should first be weakened by cutting a notch half way through it the first time before being completely removed the next.
Links
- https://www.bonsaiempire.com/tree-species/pyracantha
- keep the rootball slightly moist
- must not dry out in summer
- spring or late summer is a good time to thin out a dense canopy
- wiring is possible on young twigs
- hard pruning is tolerated, will bud from old wood if healthy and vigorous
- repot every two years and older trees every three to five years in early spring
- http://www.bonsai4me.com/SpeciesGuide/Pyracantha.html
- repot every three to four years as leaf-buds extend
- prune old wood in early spring or late summer
- after flowering, trim back new growth to shape
- remove all larger leaves in June to encourage ramification
- branches as young as 2 years old can be brittle
- new shoots respond well to wiring
- https://www.mistralbonsai.com/en/all-about-bonsai/bonsai-datasheets/mediterranean-bonsai/pyracantha-sp/
- direct sunlight during flowering, shade during summer
- protect from freezing conditions
- needs plenty of humidity
- best not to feed during the flowering period
- repot every 2 years in spring
- 100% akadama or mixed with 20% of volcanic clay
- pruning at the beginning of spring
- pinching after flowering