Light
Full Sun
Requires full sun or bright indirect light; benefits from south-facing exposure.
Reference image Coryphantha sublanata
Woolly Beehive Cactus
Overview
Coryphantha sublanata is a slow-growing globose to short cylindrical cactus in the family Cactaceae. Known for its distinct woolly crown and large golden-yellow flowers, it makes a prized specimen for dry gardens and succulent collections 1.
Taxonomy and Naming
The genus name Coryphantha derives from the Greek words for 'summit' and 'flower', indicating that its blooms emerge from the top of the plant. The specific epithet sublanata refers to the dense woolly felt present in the areoles and the apex 2.
Distribution and Habitat
This species is native to western Mexico, primarily in the states of Jalisco, Nayarit, and Colima. It typically inhabits rocky slopes, limestone crevices, and dry scrublands, often growing under the light shade of companion shrubs 1.
Appearance
The green stem is heavily tuberculate with prominent, spiraling bumps. Radial spines are strong, yellowish-brown, and slightly curved. During mid to late summer, large silk-textured yellow flowers up to 7 cm wide open at the woolly crown, followed by green, fleshy fruits 3.
Cultivation
In cultivation, it requires an extremely porous mineral substrate with excellent drainage. Water thoroughly during the active growing season only when the soil has dried out completely. Keep dry and cool in winter to encourage spring blooms 2.
Common Cultivation Errors
The most prevalent issue is root rot caused by overwatering, particularly in low-light conditions or during the winter dormancy. Insufficient sunlight will cause etiolation, causing the plant to stretch and weaken.
Bibliography
References
Watering
10-30 Days
Water only when soil is dry. Stop watering entirely in winter.
Soil
Well-draining, mineral-rich cactus mix with pumice and coarse sand
Extremely porous mineral mix with pumice, grit, and very little organic matter.
Safety
Contact/Ingestion Risk
Possesses sharp, stiff spines. Keep out of reach of children and pets.
Difficulty
Easy
Very easy to maintain if overwatering is strictly avoided.
Native Habitat
Mexico (Jalisco, Nayarit, Colima)
Found across the rocky, semi-arid regions of western Mexico, growing on volcanic and limestone soils under the partial shade of low desert shrubs.
Frequently Asked Questions
How often should Coryphantha sublanata be watered?
During summer, water deeply only when the soil is completely dry (about every 10 days). In winter, suspend watering entirely.
What is the best soil mix for this cactus?
A fast-draining mineral cactus mix containing plenty of pumice, lava rock, and coarse sand, with very low organic content.
Is Coryphantha sublanata toxic to pets?
It is not known to be chemically toxic, but its sharp, rigid spines pose a physical hazard to pets and children.
How can I encourage my cactus to bloom?
Provide ample sunlight and allow the plant to go dormant in winter by keeping it completely dry and in a cool location (around 5-10°C).
What does it mean if the stem stretches and becomes thin?
This is etiolation, caused by insufficient light. Gradually move your cactus to a much brighter spot with direct sunlight.
When should I repot Coryphantha sublanata?
Generally every 2-3 years in early spring when the roots begin to crowd the pot, moving it to a slightly larger container.
Can I leave my cactus outdoors in winter?
It can tolerate brief, light frosts (down to -5°C) if the soil is kept absolutely dry. In colder regions, bring it indoors.
Why is the woolly crown on top flattening or getting dirty?
Overhead watering or rain exposure matted the wool. Always water at the base of the plant to keep the crown fluffy.
What is the growth rate of this cactus?
Coryphantha sublanata is a very slow-growing species. Patience is key; avoid over-fertilizing to force growth.
What fertilizer should I use and when?
In spring and summer, apply a low-nitrogen, high-potassium cactus fertilizer diluted to half strength once a month.