PlantFun
Plant Needs
Sunlight
Requires full direct sunlight daily for robust growth and flowering; tolerates hot, arid conditions
Watering
Drought-tolerant; water deeply once weekly during prolonged dry spells, avoid waterlogging
Temperature
Hardy to -10°C; withstands summer heat up to 35°C, prefers cool to temperate dry climates
Characteristics
- Leaf: Silver-gray, woolly, deeply lobed with sharp spines along margins and veins
- Flower: Purple spherical composite heads (5–8 cm diameter) surrounded by rigid spiny bracts
- Stem: Thick, woolly, branched, with spiny wings running along its length
Care Guide
Watering
Water deeply when top 5 cm of soil is completely dry; reduce watering during cool, rainy periods
Fertilization
Apply diluted low-nitrogen fertilizer once monthly. Use fertilizer with balanced potassium to support flower development without excessive foliage growth
Banana peel compost tea：Use fully composted banana peels; dilute 1:20 with water for root drenching to avoid pest infestations from raw organic matterPruning
- Deadhead spent flower heads to limit self-seeding if uncontrolled spread is unwanted
- Remove lower yellowing leaves to improve airflow and reduce fungal disease risk
- Cut back the entire plant to ground level after flowering to clear debris for next year's growth cycle
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Non-toxic to cats; no systemic health risks
Humans: Physical skin/mucous membrane irritation from spines; no systemic toxic effects from ingestion
Garden Uses & Culture
Culture: N/A
Usage: Ornamental dry garden specimen; provides nectar for bees and butterfly pollinators
