Mexican lime cactus
Ferrocactus pilosus
pilosus
About this plant
Ferrocactus pilosus, commonly known as the Mexican lime cactus, is a barrel-shaped cactus with prominent ribs and long, sharp spines. It is known for its striking appearance and resilience in dry conditions. This cactus is often grown as an ornamental plant in gardens and collections due to its unique form and bright yellow flowers that bloom in summer.
Taxonomy
- Genus
- Ferrocactus
- Family
- Cactaceae
- Higher classification
- Order Caryophyllales
- Plant type
- Succulent
- Lifespan
- Perennial
Origin & Distribution
- Native region
- Mexico
- Distribution
- Native to northeastern Mexico, especially in arid and semi-arid regions.
Care
- Light preference
- Full sun
- Suitable locations
- Indoor, Outdoor, Balcony, Greenhouse
- Preferred window facing
- South-facing, West-facing, East-facing
- Watering frequency
- Rare
- Watering interval
- 14–21 days
- Humidity
- Low
- Minimum
- 5 °C
- Maximum
- 40 °C
- Optimal
- 20-30 °C
- USDA hardiness zones
- 9-11
- Soil pH
- 6.0-7.5 (neutral to slightly acidic)
- Soil type
- well-draining sandy or cactus potting mix
Watering. Water sparingly, allowing soil to dry completely between waterings. Reduce watering in winter when the plant is dormant.
Fertilizing. Feed with a balanced cactus fertilizer during the growing season (spring and summer) once a month. Avoid fertilizing in winter when the plant is dormant.
Ferrocactus pilosus is a tough cactus that prefers bright sunlight and well-draining soil. It needs infrequent watering and is sensitive to overwatering, which can cause root rot. It requires minimal maintenance but should be protected from frost.
Propagation
- Propagation methods
- Seeds
- Care difficulty
- Medium
Ornamental features
- Flowering
- Yes
- Flowering period
- summer
Distinctive barrel shape, long spines, and bright yellow summer flowers.
Toxicity & Safety
- Toxic to humans
- Non-toxic
- Toxic to pets
- Non-toxic
- Weed potential
- Not considered a weed
Non-toxic to humans and pets but spines can cause injury if touched.
Allergy information
- Allergy risk
- Low
- Allergy triggers
- Skin contact
- Pollen level
- Low
Ferrocactus pilosus has low allergy risk. It does not produce much airborne pollen, so it is unlikely to cause allergic reactions. However, some people might be sensitive to its spines or sap, so handle with care to avoid skin irritation.
Common problems
Overwatering can lead to root rot. Insufficient light may cause poor growth or stretching. Pests like mealybugs can occasionally appear.
Uses
Primarily grown as an ornamental plant for its unique shape and flowers. Suitable for xeriscaping and drought-tolerant gardens.
Notes
Handle with thick gloves to avoid injury from spines. Repotting is rarely needed and should be done carefully to avoid damaging roots. Protect from frost and prolonged cold temperatures.