Pot Size: 8"
Accepted Scientific Name: Ferocactus horridus
Origin and Habitat:
Ferocactus horridus is native to central and southwestern Mexico, where it grows in arid, rocky slopes and semi-desert habitats. It is commonly found on limestone-rich soils and in areas with excellent drainage, often sharing its environment with agaves, other cacti, and drought-tolerant shrubs. This species thrives in regions with intense sunlight and long dry seasons, relying on its thick ribs and spines to conserve water and protect itself from herbivores. Rainfall in its natural habitat is typically scarce and seasonal, with plants enduring months of drought. Its natural range highlights its remarkable adaptation to extreme heat, poor soils, and limited water resources.
Description:
Ferocactus horridus is a slow-growing, solitary barrel cactus that can reach 12–20 inches tall and up to 10 inches wide. The body is typically spherical to slightly columnar with deep ribs lined by heavy spines. Its spines are robust, strongly hooked, and can measure up to 3 inches long, ranging from yellow to reddish-brown. Flowers emerge near the crown in summer, forming bright yellow, funnel-shaped blooms about 2 inches in diameter. These are followed by small, yellowish fruits that add ornamental interest. The striking appearance of hooked spines and vivid flowers makes it a prized species among collectors.
Cultivation:
Zone: Hardy in Zones 9–11; best grown in containers in cooler climates.
Temperature: Prefers warm conditions, 18–32°C, and should be kept above 10°C to avoid cold damage.
Growth rate: Very slow growing, reaching maturity over decades.
Soil: Requires a highly porous mix with pumice to ensure excellent drainage and prevent root rot.
Watering: Water sparingly during active growth; allow soil to dry completely between waterings; keep nearly dry in winter.
Fertilizing: Use a diluted, low-nitrogen cactus fertilizer every 2–3 weeks during spring and summer.
Light: Full sun is essential for compact growth and spine development; provide bright indoor light if grown inside.
Pests and diseases: Susceptible to mealybugs, spider mites, and scale; overwatering may lead to fungal infections and root rot.
Propagation:
Propagated primarily from seed, as plants are solitary and rarely produce offsets.
