Troubleshooting
Carob problems — and how to fix them
Carob (Ceratonia siliqua) 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.
Root rot from overwatering
The commonest killer, especially in pots or heavy soils; water deeply but infrequently and ensure very sharp drainage.
No pods on a single tree
Carob is usually dioecious, so a lone tree or wrong-sex tree won't fruit; plant a male and female or a hermaphrodite cultivar.
Frost damage when young
Tender seedlings and young trees are injured by hard frost; protect until established, after which they tolerate light frost.
Very slow to fruit
Seed-grown trees can take several years to begin podding; use grafted, sexed plants for quicker, reliable crops.
Prevent carob problems before they start
Most carob issues are care-mismatch, not bad luck. Dial in the basics:
Looking for carob in general rather than its problems? Read the full carob care guide — light, water, soil and feeding.
Carob problems — FAQ
Why is my carob root rot from overwatering?
The commonest killer, especially in pots or heavy soils; water deeply but infrequently and ensure very sharp drainage.
Why is my carob no pods on a single tree?
Carob is usually dioecious, so a lone tree or wrong-sex tree won't fruit; plant a male and female or a hermaphrodite cultivar.
Why is my carob frost damage when young?
Tender seedlings and young trees are injured by hard frost; protect until established, after which they tolerate light frost.
Why is my carob very slow to fruit?
Seed-grown trees can take several years to begin podding; use grafted, sexed plants for quicker, reliable crops.