PlantFun
Plant Needs
Sunlight
Full sun to bright indirect light; provide partial shade during midday summer heat to prevent sunscald
Watering
Allow soil to dry completely between waterings; avoid overwatering to prevent root rot and stem collapse
Temperature
Thrives in 18–30°C; protect from frost below 10°C to prevent tissue damage
Characteristics
- Stem: Columnar, segmented, with paired sharp spines along vertical ridges; green to gray-green fleshy tissue
- Leaf: Tiny, ephemeral leaves that drop within weeks, leaving small spine scars along stem ridges
- Flower: Clusters of small yellowish-green cyathia at stem tips; non-showy but distinct
Care Guide
Watering
Water thoroughly when top 10–15 cm of soil is dry; reduce frequency during extreme heatwaves
Fertilization
Diluted cactus fertilizer once every 2 months. Use low-nitrogen fertilizer to promote healthy stem growth without excessive foliage
Eggshell powder topdressing：Crush fully dried eggshells into fine powder; sprinkle lightly on soil surface; avoid direct contact with stems to prevent sap irritationPruning
- Wear nitrile gloves to avoid contact with toxic sap during pruning
- Remove dead or discolored stem segments at the base to maintain plant health
- Trim leggy growth in early spring to encourage compact branching
Toxicity
Warning: this plant may be toxic.
Pets & Humans
Pets: ASPCA: Toxic; sap exposure causes oral irritation, hypersalivation, vomiting, and diarrhea
Humans: Milky latex sap causes skin irritation, redness, and blistering on contact; oral ingestion leads to pain, nausea, and vomiting
Garden Uses & Culture
Culture: N/A
Usage: Ornamental succulent for xeriscaping, rock gardens, and indoor desert plant collections
