Blossom end rot: how to spot and prevent it disorder
How do you spot blossom end rot?
At the blossom end of the fruit there is a watery, then dark, sunken and leathery patch. It is not a disease and does not pass from plant to plant, it is a sign that calcium never reached the fruit.
How do you prevent blossom end rot?
Even moisture in the soil is the main measure: mulch and deep watering instead of a little and often. No excess nitrogen. Lime after a soil test, so that the calcium in the soil is available at all.
What works against blossom end rot?
Remove the affected fruit. The next fruits come clean once the moisture steadies. A calcium spray gives temporary relief at best and does not replace watering.
Where does blossom end rot show up? 5
Vegetables 5
Sources: Clemson Cooperative Extension, University of Maryland Extension
Checked on 17 August 2026.