Plant guide
デンドロビウム
Watering rhythm
Every 7–10 days
Dendrobium orchids belong to the orchid family and are native to Southeast Asia. They're beloved for their deep green stems and stunning blooms, making them one of the easiest orchids to grow. You'll get to enjoy seasonal changes, and with proper care, they'll reward you with flowers year after year.
A bright windowsill is ideal for dendrobiums. Avoid direct sunlight and aim for filtered light through a sheer curtain instead. Keep temperatures above 15°C (59°F) year-round, and never let them drop below 10°C (50°F) in winter. Humidity should sit around 50–70%.
Light and temperature change a plant's metabolism, so the ideal cadence shifts with the seasons.
Spring
Every 5–8 days
Summer
Every 5–7 days
Autumn
Every 7–10 days
Winter
Every 12–16 days
Water thoroughly once the soil surface dries out—that's the golden rule. Just make sure the roots never stay constantly wet. Misting the leaves regularly will help keep them vibrant and happy. During winter, ease back on watering, and once growth slows down, let the soil dry out a bit between waterings.
Quick lookup from symptom to likely cause and action.
| Symptom | Likely cause | What to try |
|---|---|---|
| Flowers won't bloom | The plant often lacks a proper winter rest period or isn't getting enough light. | Give your dendrobium a good cool, dry rest through fall and winter with plenty of dormancy time. When spring arrives, move it to a brighter location. |
| Leaves turning yellow | You may be watering too much and causing root rot, or the plant isn't getting enough light. | Wait for the soil to dry between waterings. Improve air circulation and move your plant to somewhere brighter. |
| Stems wilting and drooping | Root rot has set in, usually from poor drainage or watering too frequently. | Consider repotting your orchid in fresh orchid-specific potting mix, making sure the pot has drainage holes. |
| Small insects appearing (like scale) | Poor air circulation and low ventilation create ideal conditions for pests to thrive. | Gently wipe away any pests you spot with a cotton swab. Make it a habit to softly wipe the leaves regularly to prevent infestations. |
| Buds dropping off | Sudden temperature swings, dry conditions, or moving the plant around when it's budding can trigger this. | Once buds appear, keep your dendrobium in one spot and maintain consistent temperature and humidity levels. |
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