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Sempervivum arachnoideum 8.5cm

Name: Sempervivum arachnoideum 8.5cm
Brand: Greenleaf Garden Center
SKU: Sempervarachnoid8.5cm
Price: 3.9 EUR
Availability: InStock

€4,50

€3,90

Quantity

Hardy outdoor succulent · Crassulaceae · Cobweb rosette

Sempervivumarachnoideum

It sees the cold and carries on ❄️

Family: Crassulaceae · Nursery pot diameter: 8.5 cm · Height: 15 cm

Crassulaceae
Alpine outdoor plant
Full sun
Frost hardy
Sensitive to winter wet

Sempervivum arachnoideum forms a colony of small tightly composed rosettes, with fine white hairs bridging the tips like a genuine spider’s web. This intricate mesh softens the pointed leaves and gives the cluster the appearance of a snow-covered micro-landscape or handmade lace. Contrast between green bodies and silvery fibres is instantly recognisable, making every rosette resemble an individual miniature jewel.

As offsets multiply, the rosettes join into a rich tapestry of different sizes, green and reddish tones and constant small changes. Flowering on a mature rosette adds vertical movement while the wider colony continues to fill the composition. This is a highly photogenic Sempervivum with strong collector character, perfect for anyone drawn to natural textures and plant forms that appear to come from a storybook.

What makes it distinctive

Cobweb hairs, alpine hardiness and colonial growth make it an outdoor plant, not a typical indoor succulent.

Natural cobweb

White tip hairs connect over the rosette.

A living colony

Offsets gradually fill shallow pots and crevices.

Seasonal colour

Cold and light alter anthocyanin tones.

Why you’ll love it: it tolerates a real winter and turns a shallow pot into a miniature alpine landscape.

In your spacePlacement & plant pairingsWhere it looks its best and which plants sit comfortably alongside it

In your space

Where it looks its best

Keep outdoors year-round in full sun, in a shallow pot or rock garden with excellent drainage and no standing winter rain.

Plant pairings

Plants that complement it

Pair with hardy alpine succulents, not tropical indoor species.

Sempervivum tectorum — larger clean rosettes in the same outdoor cycle.
Sedum spurium — a low trailing mat with similar hardiness.
Sedum album — finer texture between rosettes.

Care at a glance

Light

Full outdoor sun; indoors it loses compact form.

Watering

Water after dry-down in growth; minimal added water in a wet winter.

Climate

Frost hardy but requires airflow and protection from stagnant winter wet.

Pets

Not intended for consumption; keep small parts and flower stalks out of chewing reach.

Selected for this plant

Substrate & feeding

Suitable substrateSybasoil Cacti & Succulent Premium Mix 5ltView product

Suitable feedCactus&Succulent Focus 100mlView product

Detailed careComplete care guideLight, watering, seasonal rhythm, substrate and feeding in detail

Light and position

Full outdoor sun; indoors it loses compact form.

How to water

Water after dry-down in growth; minimal added water in a wet winter.

Air and humidity

Outdoor airflow dries the dense web after rain.

Temperature and seasonal rhythm

Active spring–autumn and hardy in winter cold; wet saturation is a greater risk than dry frost.

Substrate

Highly mineral shallow mix with grit and absolute drainage.

Feeding, repotting and handling

Minimal spring feeding; rich fertiliser produces soft growth.

Botanical identityIdentity & natural originAccepted name, cultivar history and the wild plant’s natural range

Accepted name

The accepted name is Sempervivum arachnoideum L., a species in the Crassulaceae.

Described by Linnaeus

Carl Linnaeus published the species in 1753; it is not a trade cultivar.

European mountains

Its native range runs from northern Spain through the Alps to the Apennines in sunny rocky alpine sites.

From natural habitat to care: Exposed alpine rocks provide strong sun, frost and almost no standing water. In a pot, that means a permanent outdoor position, shallow mineral mix and protection chiefly from wet winter saturation—not from normal dry frost.

Greenleaf for Plant NerdsScientific facts nobody asked forBotanical detail for anyone who wants to understand the structures behind the plant’s appearance

The cobweb is leaf hair

Tip hairs interlock between neighbouring leaves.

Each rosette is monocarpic

It flowers once and dies, while offsets continue.

Anthocyanins change seasonally

Cold and light can redden the rosette.

Hardiness does not mean wet tolerance

Frozen saturated mix damages roots and crowns.

Frequently asked questions

Plant-specific answers for Sempervivum arachnoideum, from light and watering to its seasonal rhythm.

01Which light keeps the correct form?

Full outdoor sun; indoors it loses compact form.

02When does it genuinely need water?

Water after dry-down in growth; minimal added water in a wet winter.

03What changes through the year?

Active spring–autumn and hardy in winter cold; wet saturation is a greater risk than dry frost.

04Why did one rosette die after flowering?

This is normal monocarpic behaviour; remove the dry rosette when loose and leave the offsets.

05Can it live indoors?

Not as a correct permanent position: it needs outdoor sun, air and a cold seasonal cycle.

06What about pets and children?

Not intended for consumption; keep small parts and flower stalks out of chewing reach.

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Sempervivum arachnoideum 8.5cm

Sempervivum arachnoideum 8.5cm

Sempervivumarachnoideum

What makes it distinctive

Natural cobweb

A living colony

Seasonal colour

Where it looks its best

Plants that complement it

Care at a glance

Light

Watering

Climate

Pets

Substrate & feeding

Light and position

How to water

Air and humidity

Temperature and seasonal rhythm

Substrate

Feeding, repotting and handling

Accepted name

Described by Linnaeus

European mountains

The cobweb is leaf hair

Each rosette is monocarpic

Anthocyanins change seasonally

Hardiness does not mean wet tolerance

Frequently asked questions

Sempervivum arachnoideum 8.5cm — Care & Tips

We take care of the packaging!

With specially designed boxes, we ensure that the plants will reach you intact, no matter what they encounter on the way!

All plants in 3L pots or larger are placed in individual boxes that secure the plant at the base of the pot, preventing it from tipping over.

The cardboard used for the boxes is specially made to provide resistance to potential impacts during transport.

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