Black heart is an internal fruit-rot problem in pomegranate associated with Alternaria. Affected fruit can look relatively normal outside while developing dark decay internally.
Why it is difficult to spot
Because symptoms can be primarily internal, fruit may not show obvious external rot before harvest. Blossom and fruit conditions can influence disease development.
What to do
Remove affected fruit and mummified fruit, maintain sanitation and avoid unnecessary moisture on flowers and fruit. Repeated losses warrant a closer disease assessment and seasonal prevention plan.
Pomegranates rotting inside?
Earth People can inspect the tree and surrounding conditions and recommend an organic-first disease-management plan.