Sempervivum Arachnoideum
Sempervivum arachnoideum is a cold-hardy, rosette-forming succulent known for the web-like threads of white hairs that grow across its center. These “cobwebs” are a natural feature that help protect the plant from harsh sun. It spreads through offsets, forming a dense mat of tiny, web-covered rosettes.
Basic Care Info
Light
Full sun to light shade. Tolerates bright light and colder climates.
Water
Water moderately. Allow soil to dry fully between waterings.
Soil
Use gritty, well-draining soil. Thrives in rock gardens and crevices.
Temperature
Very cold-tolerant. Survives snow and frost with ease.
Propagation
Propagates easily by offsets (“chicks”). Divide and replant as needed.
Dormancy
Winter dormant—minimal water needed during cold months.
✨ Fun Facts
- The “web” is made of fine hairs produced by the plant to protect from sun and frost.
- Can survive freezing temperatures—ideal for outdoor rock gardens.
- Spreads quickly through offsets, forming lovely dense clusters.
👍 Perfect For
- Alpine and rock gardens
- Cold-climate succulent arrangements
- Miniature planters and trough gardens
Caring for Your New Plant
Here's what you need to know to help your Sempervivum Arachnoideum thrive
When You Receive
Let your plant rest in shade for a few days before planting. Wait 10 days before watering.
Placement
Outdoor plants that need direct sunlight, preferably morning or late afternoon sun.
Watering
Water only when the substrate is dry. If in doubt, it's better not to water.
Substrate
Use a mix of 50% peat and 50% pumice/volcanic gravel for best results.
More Little Friends for Your Collection
These cuties would make perfect companions for your Sempervivum Arachnoideum
Chick Charms Giant Copper Canyon
Massive, color-shifting rosettes in rich copper hues—hardy and eye-catching.
Crassula David
Compact, green Crassula with red-tinged edges—ideal for tidy, colorful arrangements.
Sedum Adolphii
Golden-yellow rosettes that blush orange in the sun—fast-growing and easy to love.
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