Formosa firethorn (Pyracantha koidzumii)
Care, watering, light and tips for Formosa firethorn on Floravia.
Quick facts
- Family: Rosaceae
- Difficulty: Easy to care for
- Watering: every 7 days
- Light: Full sun
- Temperature: 0–30 °C
- Toxicity: Toxic to pets
About Formosa firethorn
Pyracantha koidzumii, commonly known as Koidzum's Firethorn, is a robust and thorny evergreen shrub, valued for its dense clusters of red or orange berries that persist through autumn and winter. Its small white flowers in spring and bright green foliage year-round make it ideal for defensive hedges, visual screens, or as a specimen plant in urban and rural gardens. It is an excellent choice for attracting birds and adding seasonal color.
Native range
Taiwan
Care tips
It requires full sun for optimal flowering and fruiting, though it tolerates partial shade. Watering should be regular during establishment and dry periods, reducing it once the plant is mature and more drought-tolerant. It prefers well-drained, fertile, and slightly acidic to neutral soils. A common mistake is the lack of formative pruning, which can lead to unruly growth and reduced berry production.
How to save a dying Formosa firethorn
- Warning signs
- Yellowish leaves or brown spots, fruit drop, lack of flowering.
- First aid
- Check watering (underwatering common), prune dry branches, consider repotting if drainage is poor.
- What kills it
- Overwatering causing root rot or prolonged underwatering in summer.
- Can it be saved?
- Yes, if roots are not completely rotted and the cause is corrected in time.