Sempervivum arachnoideum x tectorum

Sempervivum arachnoideum x tectorum

€6,90
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Sempervivum arachnoideum x tectorum
  • Sempervivum arachnoideum x tectorum
  • Sempervivum arachnoideum x tectorum
  • Sempervivum arachnoideum x tectorum
  • Sempervivum arachnoideum x tectorum
Sempervivum arachnoideum x tectorum

Sempervivum arachnoideum x tectorum

€6,90
Organic
Sustainable
Locally grown

🪴Standard: 9x9 cm pot

🚂  Ships across EU

🌱 Grown without pesticides or UV lamps
Flower Color: Pink

Sunlight: Full sun

Growth Habit: Compact

Origine: Southern Europe

Sempervivum × arachnoideum × tectorum is a fascinating hybrid succulent that combines the filamentous, cobweb-like charm of S. arachnoideum with the larger, more robust growth habit of S. tectorum.

Its rosettes are tightly formed, ranging from 3 to 10 cm in diameter, with fleshy, pointed leaves that can display shades of gray-green to bluish-green.

They become tinged with pink under stress such as exposure to cold or bright bright light.

The characteristic cobweb filaments, which are fine hairs stretching across the tips of the leaves, help protect the plant from intense sunlight, reduce water loss, and add a striking visual texture.

Truly, they look like they are covered with spiderwebs!!

It's a plant with so many powers - read the Tales below to get a sense of what it is doing!

During summer, this hybrid produces star-shaped, pink to red flowers on erect flowering stems that rise above the rosettes.

Each flower is hermaphroditic, featuring multiple stamens surrounding a central ovary, and is attractive to bees and other pollinators, though sexual reproduction is limited because hybrids are often partially sterile.

Learn more about how to garden with : Sempervivum arachnoideum x tectorum
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Gardening Tips

After blooming, the rosette will die.
But, like other Sempervivum, this hybrid produces numerous offsets (small rosettes) or pups, which makes it perfect for propagation, gift-giving or ground covers.
The Botany

Floral Morphology

Sempervivum × arachnoideum × tectorum forms tight, symmetrical rosettes with fleshy, pointed leaves that are gray-green to bluish-green.

Many rosettes display fine, cobweb-like hairs inherited from S. arachnoideum, giving them a distinctive texture.

During summer, erect flower stems rise above the rosettes, bearing star-shaped flowers in shades of pink to red.

Each flower is small but attractive, with multiple petals radiating from a central cluster of stamens, creating a classic houseleek bloom.

Reproductive Biology

This hybrid primarily propagates vegetatively through offsets, or “chicks,” which grow around the mother rosette, forming dense mats over time.

While the flowers are hermaphroditic and can be pollinated by insects such as bees, many hybrids are partially sterile, so sexual reproduction is limited.

The plant’s propagation strategy ensures survival and rapid colonization in suitable habitats.

Ecology & Adaptations

Native to alpine and subalpine regions of Central and Southern Europe, this hybrid thrives in rocky, sandy, and extremely well-drained soils.

It is highly drought-tolerant, storing water in its thick leaves, and tolerates full sun. The cobweb hairs on the leaves protect against intense sunlight and reduce water loss, while the rosettes can close in response to extreme heat or frost.

These adaptations make it ideal for rock gardens, alpine gardens, walls, and xeriscaping, providing both visual interest and resilience in harsh environments.

Other Names:

Houseleek
The Myth

This cultivar is a fusion between the common houseleek (Sempervivum tectorum) and the cobweb houseleek (Sempervivum arachnoideum).

It is sometimes known and sold under the name Sempervivum x fauconnetii.

There are multiple theories as to why the hairs arrange themselves across the tips of the leaves.

Water Optimization - Thick pubescence on leaves is often a method to reduce water loss and desiccation. The hairs break up airflow on the leaf surfacem reducing evapotranspiration across the surface of the leaves.
Shade - Sun in xeric or high altitude environments can be brutal on small succulent plants, so a little self made shade can help. I have observed that the filaments become more numerous and more densely packed in the summer, especially if they are exposed to direct sunlight.

What are your experiences with the threads of a Sempervivum arachnoideum x tectorum?

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