Euphorbia guillauminiana care guide
Euphorbia guillauminiana
Also known as: Guillauminiana
Pets and children
Considered toxic
The white latex from damaged stems or leaves strongly irritates skin and eyes and causes mouth inflammation or vomiting if eaten, and the branches are spiny; keep it out of reach and consult a veterinarian or doctor if swallowed.
How often to water Euphorbia guillauminiana
- Spring–Summer (Mar–Sep)
- Every 10 days
- A summer grower: while in leaf, water well two or three days after the soil dries as a guide, and give very little in early spring before it leafs out.
- Autumn (Oct–Nov)
- Every 14 days
- Once the leaves color and start to drop, cut back to about one to two weeks after the soil dries.
- Winter (Dec–Feb)
- Every month
- While leafless, keep it nearly dry and moisten the surface lightly about once a month, as a guide.
Light and placement for Euphorbia guillauminiana
From Madagascar, it likes strong light and warmth: outdoors in sun while in leaf as a guide, which keeps the branches short and the crown umbrella-shaped; shelter it from long rain and give it moving air.
Overwintering Euphorbia guillauminiana
Overwintering guide: 10°C (50°F) or above
Quite tender: keep it above about 10°C, moving it to a bright, warm room when nights fall under 15°C; it rests leafless and dry, away from cold windows and floors at night.
Fertilizing and repotting Euphorbia guillauminiana
Fertilizer
While in full leaf from May to August, diluted liquid fertilizer about once or twice a month; stop when the leaves start to drop and give none in dormancy.
When to repot
Spring–Summer (Mar–Sep)
Common problems with Euphorbia guillauminiana
- Cold combined with damp soil in winter rots the roots or trunk.
- Heavy watering in spring before it leafs out damages the roots.
- Low light draws the branches out and the compact shape is lost.
Tips for growing Euphorbia guillauminiana
- Follow the leaves: water more once they open and stop when they fall.
- The fine roots are easily hurt, so repot in warm early summer with little root disturbance.
- If the trunk feels soft when pressed, stop watering and keep it warm and dry.
These are AI-generated general guidelines. They vary with the variety, the placement and the pot size. For effects on pets or children, consult a veterinarian or a doctor.
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