Sempervivum arachnoideum Rubrum

Cobweb Houseleek 'Rubrum'

WhatsApp
Compact rosette succulent featuring white cobweb-like hairs; leaves turn red in cold or bright sun. Ideal for rock gardens and pots.
yard Outdoor plants wb_sunny Half-shade / Sun pets Pet Friendly
info Pot sizes shown are estimations. Real dimensions may vary depending on the merchant.
Merchant Pot Size Availability Price
Amazon.com 1-2 in In Stock $6.99 Buy
info

Plant Details

Common Name Cobweb Houseleek 'Rubrum'
Family Crassulaceae
Genus Sempervivum
Species Arachnoideum
Variety Rubrum
Origin Caucasus, Southern Russia
Blooming Pink to reddish star-shaped flowers in summer on tall stalks.
Leaf Color Green turning red/purple with white hairs
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly check Yes
yard

Care & Maintenance

terrain
Soil

Gravelly, well-draining mix; low organic matter to prevent rot.

water_drop
Watering

Drought tolerant. Water sparingly, allow soil to dry completely between waterings. Reduce in winter dormancy.

light_mode
Sunlight & Care

Needs full sun for red coloration and compact form. Tolerates partial shade in hot climates.

science
Fertilization

Minimal feeding; dilute fertilizer once in spring during active growth.

content_cut
Pruning

Remove dead flower stalks after blooming. Separate offsets for propagation.

Pest Control Aphid Mealybug Scale Insect

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

calendar_month

Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 12 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
39° – 86°
Fahrenheit
Ideal ambient air temperature range for healthy growth
water_drop
Humidity
15% – 60%
% relative
Optimal relative air humidity the plant thrives in
light_mode
Light (LUX)
3000 – 30000
Lux
Ambient illuminance level at the plant's surface
wb_sunny
Light (PAR)
2000 – 4500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
water
Soil Moisture
5% – 40%
% volumetric
Water content in the growing medium
bolt
Soil EC
200 – 800
mS/cm
Electrical conductivity (nutrient concentration in soil water)

Related Plants

You might also like these plants

Browse All ›
Sempervivum arachnoideum ssp. tomentosum
parkOutdoor plants petsPet friendly
account_treeCrassulaceae location_onCaucasus Mountains / Southern Europe

info Price unavailable

Sempervivum
parkOutdoor plants petsPet friendly
Sempervivum

Hens and Chicks

account_treeCrassulaceae location_onEurope, Mediterranean

from $15
check_circleIn Stock
yard3-4 in
Sempervivum tectorum
parkOutdoor plants
Sempervivum tectorum

Common Houseleek

account_treeCrassulaceae location_onSouthern and Central Europe

from $8
check_circleIn Stock
yard1-2 in
Acer rubrum
parkOutdoor plants petsPet friendly
Acer rubrum

Red Maple

account_treeSapindaceae location_onNorth America

from $50
check_circleIn Stock
yard5-6 in
favorite