Troubleshooting
Kohlrabi 'Superschmelz' problems — and how to fix them
Kohlrabi 'Superschmelz' (Brassica oleracea var. gongylodes 'Superschmelz') 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.
Splitting at large size
Even this tender giant can crack if watering swings between dry and wet. Keep moisture even and harvest before bulbs over-mature.
Clubroot
Distorted, swollen roots and poor bulbing in infected brassica soil. Rotate crops, lime to near-neutral pH, and ensure good drainage.
Cabbage white caterpillars
Larvae shred the leafy crown in summer, weakening growth. Net with insect mesh and remove eggs and caterpillars.
Cabbage root fly
Larvae attack roots, causing wilting and stunted bulbs. Use stem-base collars or fleece transplants to deter egg-laying.
Prevent kohlrabi 'superschmelz' problems before they start
Most kohlrabi 'superschmelz' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for kohlrabi 'superschmelz' in general rather than its problems? Read the full kohlrabi 'superschmelz' care guide — light, water, soil and feeding.
Kohlrabi 'Superschmelz' problems — FAQ
Why is my kohlrabi 'superschmelz' splitting at large size?
Even this tender giant can crack if watering swings between dry and wet. Keep moisture even and harvest before bulbs over-mature.
Why is my kohlrabi 'superschmelz' clubroot?
Distorted, swollen roots and poor bulbing in infected brassica soil. Rotate crops, lime to near-neutral pH, and ensure good drainage.
Why is my kohlrabi 'superschmelz' cabbage white caterpillars?
Larvae shred the leafy crown in summer, weakening growth. Net with insect mesh and remove eggs and caterpillars.
Why is my kohlrabi 'superschmelz' cabbage root fly?
Larvae attack roots, causing wilting and stunted bulbs. Use stem-base collars or fleece transplants to deter egg-laying.