The Sempervivum arachnoideum ‘Viridescens’ is a compact, mat-forming succulent valued for its unique cobwebbed rosettes and cold-hardy nature. This cultivar is especially popular among succulent lovers and alpine gardeners because it combines ornamental appeal with extreme cold and drought tolerance. Its neat growth habit and low maintenance needs make it ideal for beginners and collectors alike.
Native to the mountainous regions of Europe, particularly the Alps, this Sempervivum ‘Viridescens’ has a small rosette of burgundy outer leaves and light green in the center.
These cobweb threads help protect the plant from intense sun and temperature extremes.
The rosettes grow in tight clusters, producing numerous offsets that form attractive mats over time.
This is a small, low-growing succulent with individual rosettes reaching about 3 inches wide.
As offsets develop, the plant can spread up to 12 inches or more, making it an excellent groundcover for rock gardens and shallow containers.
In summer, mature rosettes produce pink to magenta, star-shaped flowers on upright stems. Each rosette flower once and then dies, but it is quickly replaced by surrounding offsets, ensuring the plant continues to thrive and spread.
When it comes to care, the Sempervivum ‘Viridescens’ prefers well-drained specialized succulent soil and infrequent watering, allowing the soil to dry completely between waterings.
Indoors, it grows best in bright light with moderate temperatures.
Outdoors, it thrives in full sun to partial shade and is hardy in USDA zones 3–8, tolerating frost and snow.
Fertilizer is rarely needed, but a light feeding in spring can encourage healthy growth.
The Bottom Line
Overall, the Sempervivum arachnoideum ‘Viridescens’ is a reliable and visually appealing succulent, with its distinctive cobweb texture, compact form, and exceptional resilience. Its ability to withstand cold, drought, and neglect makes it an excellent choice for rock gardens, containers, and low-maintenance landscapes.
Bloom Season
Flower Color
Growth Rate
Hardiness Zone
Mature Size
Plant Type
Resistance
Sun Exposure
Watering Needs
| Bloom Season | Summer |
|---|---|
| Botanical Name | Sempervivum arachnoideum 'Viridescens' |
| Dormancy | Winter |
| Family | Crassulaceae |
| Flower Color | Magenta |
| Genus | Sempervivum |
| Growth Habit | Rosette |
| Growth Rate | Fast |
| Hardiness Zone | 3, 4, 5, 6, 7, 8 |
| Mature Size | 12 in. wide |
| Native Area | Mountainous regions of Europe |
| Plant Type | Succulent |
| Propagation | By cuttings |
| Resistance | Extremely drought-tolerant, mild frost tolerant, pest resistance |
| Soil PH | 6.5, Acidic, Neutral |
| Soil Type | Succulents potting mix soil |
| Special Features | Easy to maintain, Easy to grow |
| Sun Exposure | Full sun (6+ hrs.), Partial shade (3–6 hrs. sun) |
| Toxicity | Safe for humans, friendly to dogs, friendly to cats |
| Watering Needs | Low |
Growers Quick Reference Guide - Key Features
| Bloom Season | Summer |
|---|---|
| Botanical Name | Sempervivum arachnoideum 'Viridescens' |
| Dormancy | Winter |
| Family | Crassulaceae |
| Flower Color | Magenta |
| Genus | Sempervivum |
| Growth Habit | Rosette |
| Growth Rate | Fast |
| Hardiness Zone | 3, 4, 5, 6, 7, 8 |
| Mature Size | 12 in. wide |
| Native Area | Mountainous regions of Europe |
| Plant Type | Succulent |
| Propagation | By cuttings |
| Resistance | Extremely drought-tolerant, mild frost tolerant, pest resistance |
| Soil PH | 6.5, Acidic, Neutral |
| Soil Type | Succulents potting mix soil |
| Special Features | Easy to maintain, Easy to grow |
| Sun Exposure | Full sun (6+ hrs.), Partial shade (3–6 hrs. sun) |
| Toxicity | Safe for humans, friendly to dogs, friendly to cats |
| Watering Needs | Low |
- Description
- Key Plant Features
The Sempervivum arachnoideum ‘Viridescens’ is a compact, mat-forming succulent valued for its unique cobwebbed rosettes and cold-hardy nature. This cultivar is especially popular among succulent lovers and alpine gardeners because it combines ornamental appeal with extreme cold and drought tolerance. Its neat growth habit and low maintenance needs make it ideal for beginners and collectors alike.
Native to the mountainous regions of Europe, particularly the Alps, this Sempervivum ‘Viridescens’ has a small rosette of burgundy outer leaves and light green in the center.
These cobweb threads help protect the plant from intense sun and temperature extremes.
The rosettes grow in tight clusters, producing numerous offsets that form attractive mats over time.
This is a small, low-growing succulent with individual rosettes reaching about 3 inches wide.
As offsets develop, the plant can spread up to 12 inches or more, making it an excellent groundcover for rock gardens and shallow containers.
In summer, mature rosettes produce pink to magenta, star-shaped flowers on upright stems. Each rosette flower once and then dies, but it is quickly replaced by surrounding offsets, ensuring the plant continues to thrive and spread.
When it comes to care, the Sempervivum ‘Viridescens’ prefers well-drained specialized succulent soil and infrequent watering, allowing the soil to dry completely between waterings.
Indoors, it grows best in bright light with moderate temperatures.
Outdoors, it thrives in full sun to partial shade and is hardy in USDA zones 3–8, tolerating frost and snow.
Fertilizer is rarely needed, but a light feeding in spring can encourage healthy growth.
The Bottom Line
Overall, the Sempervivum arachnoideum ‘Viridescens’ is a reliable and visually appealing succulent, with its distinctive cobweb texture, compact form, and exceptional resilience. Its ability to withstand cold, drought, and neglect makes it an excellent choice for rock gardens, containers, and low-maintenance landscapes.
Bloom Season
Flower Color
Growth Rate
Hardiness Zone
Mature Size
Plant Type
Resistance
Sun Exposure
Watering Needs
| Bloom Season | Summer |
|---|---|
| Botanical Name | Sempervivum arachnoideum 'Viridescens' |
| Dormancy | Winter |
| Family | Crassulaceae |
| Flower Color | Magenta |
| Genus | Sempervivum |
| Growth Habit | Rosette |
| Growth Rate | Fast |
| Hardiness Zone | 3, 4, 5, 6, 7, 8 |
| Mature Size | 12 in. wide |
| Native Area | Mountainous regions of Europe |
| Plant Type | Succulent |
| Propagation | By cuttings |
| Resistance | Extremely drought-tolerant, mild frost tolerant, pest resistance |
| Soil PH | 6.5, Acidic, Neutral |
| Soil Type | Succulents potting mix soil |
| Special Features | Easy to maintain, Easy to grow |
| Sun Exposure | Full sun (6+ hrs.), Partial shade (3–6 hrs. sun) |
| Toxicity | Safe for humans, friendly to dogs, friendly to cats |
| Watering Needs | Low |
Growers Quick Reference Guide - Key Features
| Bloom Season | Summer |
|---|---|
| Botanical Name | Sempervivum arachnoideum 'Viridescens' |
| Dormancy | Winter |
| Family | Crassulaceae |
| Flower Color | Magenta |
| Genus | Sempervivum |
| Growth Habit | Rosette |
| Growth Rate | Fast |
| Hardiness Zone | 3, 4, 5, 6, 7, 8 |
| Mature Size | 12 in. wide |
| Native Area | Mountainous regions of Europe |
| Plant Type | Succulent |
| Propagation | By cuttings |
| Resistance | Extremely drought-tolerant, mild frost tolerant, pest resistance |
| Soil PH | 6.5, Acidic, Neutral |
| Soil Type | Succulents potting mix soil |
| Special Features | Easy to maintain, Easy to grow |
| Sun Exposure | Full sun (6+ hrs.), Partial shade (3–6 hrs. sun) |
| Toxicity | Safe for humans, friendly to dogs, friendly to cats |
| Watering Needs | Low |
