Troubleshooting
True Service Tree problems — and how to fix them
True Service Tree (Sorbus domestica) 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.
Slow establishment and poor fruiting in cool climates
A warmth-loving species that may grow slowly and fruit sparsely in cool northern gardens. Choose the warmest, most sheltered sunny spot available.
Fireblight
Bacterial shoot and blossom blight common across Rosaceae. Prune out blackened, hooked shoots well into clean wood and disinfect tools between cuts.
Waterlogging intolerance
Roots rot on cold, heavy, wet soils, stunting or killing the tree. Plant only on free-draining ground or improve drainage before planting.
Hard, astringent fruit before bletting
Sorb apples are inedibly hard and sour until bletted soft. Store picked fruit in a cool place until almost over-ripe before eating.
Prevent true service tree problems before they start
Most true service tree issues are care-mismatch, not bad luck. Dial in the basics:
Looking for true service tree in general rather than its problems? Read the full true service tree care guide — light, water, soil and feeding.
True Service Tree problems — FAQ
Why is my true service tree slow establishment and poor fruiting in cool climates?
A warmth-loving species that may grow slowly and fruit sparsely in cool northern gardens. Choose the warmest, most sheltered sunny spot available.
Why is my true service tree fireblight?
Bacterial shoot and blossom blight common across Rosaceae. Prune out blackened, hooked shoots well into clean wood and disinfect tools between cuts.
Why is my true service tree waterlogging intolerance?
Roots rot on cold, heavy, wet soils, stunting or killing the tree. Plant only on free-draining ground or improve drainage before planting.
Why is my true service tree hard, astringent fruit before bletting?
Sorb apples are inedibly hard and sour until bletted soft. Store picked fruit in a cool place until almost over-ripe before eating.