Sempervivum Arachnoideum

Sempervivum Arachnoideum, commonly known as the Cobweb Houseleek, is a captivating succulent that adds a unique texture and visual interest to any plant collection. This charming plant is named for its distinctive cobweb-like filaments that cover its rosettes, creating a fascinating and whimsical appearance. Ideal for rock gardens, containers, and succulent arrangements, Sempervivum Arachnoideum is both beautiful and easy to care for.

Key Features and Care Instructions:

Appearance: Sempervivum Arachnoideum forms tight rosettes of fleshy, pointed leaves that are green with red tips. The rosettes are covered in fine, white hairs that resemble cobwebs, giving the plant its common name. Over time, the rosettes produce offsets, creating a dense mat of cobwebbed clusters.

Light: This succulent thrives in full sun to partial shade. For the best coloration and compact growth, provide at least 6 hours of direct sunlight each day. In hotter climates, some afternoon shade can prevent scorching.

Water: Sempervivum Arachnoideum is drought-tolerant and requires minimal watering. Allow the soil to dry out completely between waterings, and water deeply but infrequently. Be careful not to overwater, as this can lead to root rot.

Soil: Use a well-draining cactus or succulent mix. A blend of sand, perlite, and potting soil ensures proper drainage and prevents waterlogged conditions. Ensure the container has drainage holes to allow excess water to escape.

Temperature: This hardy succulent can tolerate a wide range of temperatures, from hot summers to cold winters. It can withstand temperatures as low as -20°F (-29°C) when planted in the ground. For container plants, protect them from extreme frost.

Fertilizer: Sempervivum Arachnoideum requires little to no fertilization. If desired, you can apply a balanced, diluted fertilizer once during the growing season (spring and summer) to promote healthy growth.

Propagation: This plant readily produces offsets or “chicks” around the mother rosette or “hen.” These offsets can be separated and replanted to propagate new plants. Simply remove an offset, let it callous over for a day or two, and plant it in a well-draining mix.

Flowering: Sempervivum Arachnoideum produces tall flower stalks with clusters of small, star-shaped pink to reddish-purple flowers. The flowering rosette will die after blooming, but it will have produced many offsets by that time to continue the colony.

Decorative Uses: This succulent is perfect for rock gardens, alpine gardens, and container arrangements. Its unique cobwebbed rosettes add a touch of whimsy and texture to any setting. It can also be used as ground cover in sunny, well-drained areas.

Additional Tips: Sempervivum Arachnoideum is a resilient and low-maintenance plant. Remove dead rosettes and offsets to maintain a tidy appearance and to encourage new growth. Watch for common pests like aphids and mealybugs, and treat them promptly if detected.

Sempervivum Arachnoideum (Cobweb Houseleek) is a delightful and intriguing succulent that brings charm and visual interest to any garden or indoor space. Its distinctive appearance and easy care make it a favorite among succulent enthusiasts and beginners alike.