Troubleshooting
Petiole Sundew problems — and how to fix them
Petiole Sundew (Drosera petiolaris) 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.
Premature dormancy in summer
If temperatures drop below 20 °C or day length shortens significantly, the plant sheds leaves and enters dormancy unseasonally. Keep temperatures consistently warm (above 22 °C) and maintain long photoperiods during the intended growing season.
Rhizome rot during dormancy
Overwatering while temperatures are reduced is the leading killer of petiolaris sundews in cultivation. Once the plant enters its dry rest, remove the tray and water only enough to prevent complete soil desiccation.
Prevent petiole sundew problems before they start
Most petiole sundew issues are care-mismatch, not bad luck. Dial in the basics:
Petiole Sundew problems — FAQ
Why is my petiole sundew premature dormancy in summer?
If temperatures drop below 20 °C or day length shortens significantly, the plant sheds leaves and enters dormancy unseasonally. Keep temperatures consistently warm (above 22 °C) and maintain long photoperiods during the intended growing season.
Why is my petiole sundew rhizome rot during dormancy?
Overwatering while temperatures are reduced is the leading killer of petiolaris sundews in cultivation. Once the plant enters its dry rest, remove the tray and water only enough to prevent complete soil desiccation.