Water
Water thoroughly when the soil is completely dry. Reduce watering significantly during winter dormancy. Overwatering is the most common cause of rot for this species, so err on the side of caution.
Ensure good drainage to prevent waterlogging.
Also known as Dino Egg Cactus
Tephrocactus alexanderi, a unique cactus, features segmented stems covered in areoles that produce bristly spines. It's a fascinating addition to arid collections.
At-a-glance light, water, soil, and growing conditions from plant data
High
75% intensity
Prefers bright, direct sunlight for at least 6 hours daily. Can tolerate some partial shade, but may etiolate.
Infrequent
25% intensity
Allow soil to dry out completely between waterings. Reduce watering drastically in winter.
Well-draining cactus or succulent mix
50% intensity
Moderate
50% intensity
Prefers warm temperatures during the growing season (20-30°C). Tolerates cooler temperatures (10-15°C) in winter dormancy.
Low
25% intensity
Fertilize sparingly during the growing season with a diluted cactus fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water thoroughly when the soil is completely dry. Reduce watering significantly during winter dormancy. Overwatering is the most common cause of rot for this species, so err on the side of caution.
Ensure good drainage to prevent waterlogging.
Pruning is generally not required unless removing dead or damaged segments. If propagation is desired, segments can be carefully removed. Use a clean knife or shears to make a clean cut.
Allow cuts to callus over before replanting.
Easily propagated from stem segments. Allow detached segments to callus over for a few days to a week before planting in well-draining soil.
Keep slightly moist and warm until roots form, which can take several weeks to months.
Repot every 2-3 years or when the plant outgrows its container. Use a gritty, well-draining cactus mix. Repot in spring before the active growing season begins.
Choose a pot with drainage holes to prevent water retention.
Identify plants like this with ePlant AI
Snap a photo to get care tips and match similar species on the go.
Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Tephrocactus Alexanderi (Tephrocactus alexanderi)
Where Tephrocactus Alexanderi (Tephrocactus alexanderi) is found

Density
Tap map to explore
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Tephrocactus |
| Species | Tephrocactus alexanderi |
Similar in genus Tephrocactus
Answers based on plant encyclopedia data