Onionweed (Asphodelus fistulosus)
Care, watering, light and tips for Onionweed on Floravia.
Quick facts
- Family: Asphodelaceae
- Difficulty: Easy to care for
- Watering: every 10 days
- Light: Partial shade
- Temperature: 10–30 °C
- Toxicity: Toxic to pets
About Onionweed
Asphodelus fistulosus, commonly known as hollow-stemmed asphodel or løkasfodill, is an annual or short-lived perennial herbaceous plant native to the Mediterranean. It is characterized by its hollow stems and linear leaves, producing spikes of white or pale pink flowers with a darker central line on each petal. It is ideal for Mediterranean-style gardens or xeriscaping, where its delicate bloom and drought resistance can be appreciated.
Native range
Mediterranean region, including Southern Europe, North Africa, and Southwest Asia.
Care tips
It requires full sun for optimal flowering and prefers well-drained soils, even poor or sandy ones. Watering should be sparse, especially once established, as it is very drought tolerant and overwatering can lead to root rot. Avoid over-fertilizing, as it thrives in low fertility conditions. A common mistake is planting it in moist soils or partial shade, which weakens the plant and reduces its flowering.
How to save a dying Onionweed
- Warning signs
- Wilting or yellowing leaves from the base, soft stems. May look dry but cause is different.
- First aid
- Remove plant, check roots (cut if soft/dark). Repot in fresh, well-draining substrate.
- What kills it
- Overwatering and poor drainage. Does not tolerate waterlogging.
- Can it be saved?
- Yes, if roots aren't completely rotted. Requires quick action.