Black center on broccoli

Asked September 8, 2016, 3:49 PM EDT

What causes the black center on some broccoli heads? It tends to occur later in the season, not so much on the first heads.

Chisago County Minnesota

1 Response

The black flowerettes are the dead petals. the broccoli is too ripe and should have been picked when the flowers were tighter. The head on the right has obviously bolted. Temperatures that are too high can make it mature very quickly. Broccoli does best in cool weather.