Los Gatos, CA
|Last year we had a problem with mold forming on the base of our Roma tomatoes. Were we watering them too much after they began fruiting?
|Answer from NGA
June 27, 1999
|Sounds like Blossom-end rot, especially if the problem begins as a water-soaked spot which enlarges and turns dark brown and leathery. This problem is due to a calcium deficiency, often brought on by an uneven water supply. Try to keep the soil evenly moist by using a mulch and watering when needed.
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