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Bitter Pit

Non-pathogenic (calcium deficiency)

14 host plants

Dark, sunken spots appear on fruit skin during storage with bitter flesh. This calcium deficiency is worse with erratic watering. Maintain consistent moisture.

Prune lightly by thinning out branches rather than by heading. Head new shoot growth in summer on an overly vigorous tree.

Host Plants (14)

Amelanchier grandiflora Apple, Serviceberry
Asimina triloba Common Pawpaw Custard Apple
Eucalyptus cinerea Silver Dollar Eucalyptus, Silver Dollar Gum Argyle Apple
Malus atrosanguinea Carmine Crabapple
Malus brandywine Brandywine Crabapple
Malus floribunda Japanese Flowering Crabapple
Malus fusca Pacific Crabapple
Malus hupehensis Tea Crabapple
Malus indian Malus indian
Malus prairifire Prairifire Crabapple
Malus pumila Apple
Malus robusta Cherry, Crabapple
Malus snowdrift Snowdrift Crabapple
Malus transitoria Transitoria Crabapple

Quick Reference

Causal Agent
Non-pathogenic (calcium deficiency)
Host Plants
14

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