Plant guide
ガステリア
Watering rhythm
Every 14–21 days
Gasteria is a succulent native to South Africa, prized for its thick, deep green leaves arranged in two distinctive rows. This unique appearance, combined with its drought tolerance and hardiness, makes it perfect for beginners. It grows slowly, so you'll enjoy it for years to come.
Bright indirect light is ideal. Avoid direct sun and position it near a window with sheer curtains. It prefers temperatures between 15–25°C (59–77°F), and keep it above 10°C (50°F) in winter. Avoid high humidity and place it somewhere with good air circulation for best growth.
Light and temperature change a plant's metabolism, so the ideal cadence shifts with the seasons.
Spring
Every 12–18 days
Summer
Every 12–18 days
Autumn
Every 14–21 days
Winter
Every 21–35 days
The key is reading when your soil has dried out. Wait until the soil surface is completely dry, then water thoroughly. Always empty any water that collects in the saucer to prevent root rot. Water directly into the soil rather than onto the leaves, as they're prone to rot if wet.
Quick lookup from symptom to likely cause and action.
| Symptom | Likely cause | What to try |
|---|---|---|
| Leaves turning black | Too much moisture or overwatering, especially common in winter when the plant needs less water. | Stop watering right away and improve air circulation. If root rot has set in, remove the plant from its pot, trim away any blackened roots, and repot into fresh soil. |
| Leaves wilting and becoming thin | The plant has gone too long without water and is losing moisture from its leaves. Easy to miss during warmer months. | If the soil is dry, water generously—the plant should bounce back within a few days. Try checking soil moisture regularly so this doesn't happen again. |
| Leaves looking pale and growth slowing | Not enough light for proper photosynthesis. This plant won't thrive in dimly lit spots. | Move it to a brighter location, ideally by a window. Aim for at least 3 hours of bright indirect light every day, avoiding direct sun. |
| Brown spots appearing on leaves | Either leaf burn from too much direct sun, or white mineral residue left behind as water dries. Direct sun exposure can also cause this. | Move it away from direct sunlight. The spots won't fade, but new leaves will grow in healthy. |
| Soil staying wet long after watering, even in spring | Drainage has become poor, roots are crowded, or the soil isn't suited to succulents. | Repot into well-draining succulent soil. A mix of red lava rock and perlite works well too—the goal is soil that lets water flow freely through the drainage holes. |
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