Troubleshooting
Warszewiczs Kohleria problems — and how to fix them
Warszewiczs Kohleria (Kohleria warszewiczii) 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.
Stem collapse from overwatering
The hairy stems of K. warszewiczii collapse at the base if the compost is kept too wet, especially during cooler periods. Ensure the soil dries slightly between waterings and reduce frequency as temperatures drop in autumn.
Aphid colonies on new growth
Soft new spring shoots emerging from rhizomes are particularly vulnerable to aphid attack. Check re-sprouting plants weekly in spring and treat promptly with insecticidal soap or diluted neem oil to prevent establishment.
Failure to re-sprout from rhizomes
If rhizomes are kept too cold (below 10°C) or too wet over winter, they may rot and fail to re-sprout in spring. Store dormant rhizomes at 15–18°C in barely moist perlite, and check for firmness in late winter.
Prevent warszewiczs kohleria problems before they start
Most warszewiczs kohleria issues are care-mismatch, not bad luck. Dial in the basics:
Warszewiczs Kohleria problems — FAQ
Why is my warszewiczs kohleria stem collapse from overwatering?
The hairy stems of K. warszewiczii collapse at the base if the compost is kept too wet, especially during cooler periods. Ensure the soil dries slightly between waterings and reduce frequency as temperatures drop in autumn.
Why is my warszewiczs kohleria aphid colonies on new growth?
Soft new spring shoots emerging from rhizomes are particularly vulnerable to aphid attack. Check re-sprouting plants weekly in spring and treat promptly with insecticidal soap or diluted neem oil to prevent establishment.
Why is my warszewiczs kohleria failure to re-sprout from rhizomes?
If rhizomes are kept too cold (below 10°C) or too wet over winter, they may rot and fail to re-sprout in spring. Store dormant rhizomes at 15–18°C in barely moist perlite, and check for firmness in late winter.