Hard Black Spots On Tomatoes - Knowledgebase Question

Pittsburg, KS
Question by kbruff
July 19, 1999
What are the hard black spots that are in my tomatoes, and how do I stop them ?

Answer from NGA
July 19, 1999


If only the fruits and not the leaves are affected, and if the black spots are on the bottoms of the fruit, I'd say your plants have blossom-end rot. This is the result of a lack of calcium or a surplus of nitrogen tha't blocking the plants' uptake of calcium. It can be caused by irregular watering, too, which restricts calcium uptake. To prevent, make sure the soil is kept evenly moist (no wide swings from very dry to very wet). You can reduce evaporation of soil moisture by mulching around your plants. The affected fruits are edible, just cut off the affected portion.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:



[ Join now ]

Today's site banner is by greenappleagnes and is called "Orlaya White Lace"