Also known as Goldline Silverstone
Cluster Silverstone (Argyroderma congregatum) is a striking Mesemb species forming tight clumps of silvery-grey, fused leaf pairs, native to South Africa.
At-a-glance light, water, soil, and growing conditions from plant data
Bright, indirect light
75% intensity
Protect from intense, direct afternoon sun which can scorch the leaves.
Infrequent, allow to dry out
25% intensity
Reduce significantly during summer dormancy.
Well-drained
50% intensity
Moderate to warm
50% intensity
Prefers temperatures between 18-25°C during growing season. Can tolerate cooler, dry conditions in winter dormancy (around 10-15°C).
Indoor
50% intensity
Sparing
25% intensity
Use a diluted succulent fertilizer during active growth, cease in dormancy.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
| Edible | No |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Allow soil to dry out completely between waterings. Overwatering is the most common cause of death for Argyroderma species.
During their dormant period in summer, reduce watering significantly, providing only a minimal amount to prevent severe shriveling. Ensure excellent drainage to prevent root rot.
Pruning is generally not required for Argyroderma congregatum as it maintains a compact, clump-forming habit. Remove any dead or dried leaves at the base of the plant to maintain tidiness and prevent potential rot.
Pruning is primarily for aesthetic clean-up rather than shaping.
Propagate by separating offsets or 'pups' from the parent plant during the active growing season. Allow the cut surface to dry and callous over for several days before planting in a well-draining succulent mix.
Patience is key, as they can be slow to establish.
Repot every 2-3 years or when the plant outgrows its container, preferably in the spring before active growth begins. Use a gritty, well-draining potting mix formulated for succulents or cacti.
Ensure the new pot has drainage holes. Handle gently to avoid damaging the fleshy leaves.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Cluster Silverstone (Argyroderma congregatum)
Where Cluster Silverstone (Argyroderma congregatum) is found
Density
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Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Aizoaceae |
| Genus | Argyroderma |
| Species | Argyroderma congregatum |
Similar in genus Argyroderma
Answers based on plant encyclopedia data
