Troubleshooting
Summer Hyacinth problems — and how to fix them
Summer Hyacinth (Galtonia candicans) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Bulb rot in cold, wet soil
In heavy clay or poorly drained soil, bulbs can rot over winter. Improve drainage with grit or raised beds, or lift bulbs after the first frost, dry them off, and store in a cool frost-free shed until spring.
Sparse flowering after crowding
Established clumps become congested over 3–4 years, reducing flower quality. Lift and divide bulbs in early spring every few years, replanting at 30–60 cm intervals.
Prevent summer hyacinth problems before they start
Most summer hyacinth issues are care-mismatch, not bad luck. Dial in the basics:
Summer Hyacinth problems — FAQ
Why is my summer hyacinth bulb rot in cold, wet soil?
In heavy clay or poorly drained soil, bulbs can rot over winter. Improve drainage with grit or raised beds, or lift bulbs after the first frost, dry them off, and store in a cool frost-free shed until spring.
Why is my summer hyacinth sparse flowering after crowding?
Established clumps become congested over 3–4 years, reducing flower quality. Lift and divide bulbs in early spring every few years, replanting at 30–60 cm intervals.