Troubleshooting
Bracted Dendrobium problems — and how to fix them
Bracted Dendrobium (Dendrobium bracteosum) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Failure to flower
Most commonly caused by skipping or shortening the dry winter rest. A 6-8 week period with minimal watering and cooler nights is critical to trigger bud set.
Cane rot
Caused by overwatering, particularly during the rest period or in cool conditions. Reduce watering and improve air circulation.
Mealybugs
Found in the sheaths along canes. Remove with alcohol-soaked cotton buds and treat with neem oil or systemic insecticide if persistent.
Keiki formation instead of flowers
Excessive nitrogen fertiliser or too much heat during the rest period can trigger keiki (plantlet) production instead of flowers. Adjust fertiliser and ensure temperature drops at night.
Scale insects
Flat brown scales adhere to cane surfaces. Scrape off manually, treat with horticultural oil, and repeat weekly for a month.
Prevent bracted dendrobium problems before they start
Most bracted dendrobium issues are care-mismatch, not bad luck. Dial in the basics:
Bracted Dendrobium problems — FAQ
Why is my bracted dendrobium failure to flower?
Most commonly caused by skipping or shortening the dry winter rest. A 6-8 week period with minimal watering and cooler nights is critical to trigger bud set.
Why is my bracted dendrobium cane rot?
Caused by overwatering, particularly during the rest period or in cool conditions. Reduce watering and improve air circulation.
Why is my bracted dendrobium mealybugs?
Found in the sheaths along canes. Remove with alcohol-soaked cotton buds and treat with neem oil or systemic insecticide if persistent.
Why is my bracted dendrobium keiki formation instead of flowers?
Excessive nitrogen fertiliser or too much heat during the rest period can trigger keiki (plantlet) production instead of flowers. Adjust fertiliser and ensure temperature drops at night.
Why is my bracted dendrobium scale insects?
Flat brown scales adhere to cane surfaces. Scrape off manually, treat with horticultural oil, and repeat weekly for a month.