Troubleshooting
Tropical Crocus problems — and how to fix them
Tropical Crocus (Kaempferia rotunda) 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.
Rhizome rot over winter
Storing rhizomes in wet compost when dormant leads to fungal rot. Lift the pot to a dry frost-free spot (min 12 °C), water only once every 4–6 weeks, and repot into fresh compost in late winter.
Mealybugs
White cottony deposits in leaf axils indicate mealybug infestation. Wipe off with cotton dipped in isopropyl alcohol and follow up with neem oil or insecticidal soap every 7–10 days.
Faded leaf markings
Overexposure to bright light washes out the silver-green leaf variegation. Move to a shadier position and the new foliage will re-develop the characteristic patterns.
Prevent tropical crocus problems before they start
Most tropical crocus issues are care-mismatch, not bad luck. Dial in the basics:
Tropical Crocus problems — FAQ
Why is my tropical crocus rhizome rot over winter?
Storing rhizomes in wet compost when dormant leads to fungal rot. Lift the pot to a dry frost-free spot (min 12 °C), water only once every 4–6 weeks, and repot into fresh compost in late winter.
Why is my tropical crocus mealybugs?
White cottony deposits in leaf axils indicate mealybug infestation. Wipe off with cotton dipped in isopropyl alcohol and follow up with neem oil or insecticidal soap every 7–10 days.
Why is my tropical crocus faded leaf markings?
Overexposure to bright light washes out the silver-green leaf variegation. Move to a shadier position and the new foliage will re-develop the characteristic patterns.