Rot On Tomato At Bottom Where Flower Was - Knowledgebase Question

Fall River, MA
Question by DonnaFSS13
July 13, 2000
Why do my tomatoes grown in containers (10)gallon containers with adaquate drainage,full sun and watered daily get rotten at the flower (bottom) of tomato. I fertilize with miracle grow for tomatoes weekly.


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Answer from NGA
July 13, 2000

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It sounds like you are describing blossom end rot which occurs at the end of the tomatoes (and peppers) opposite the stem. While it is attributed to calcium deficiency in the soil, it often appears in cases of fluctuating soil moisture levels. In a container, there is always a risk of moisture stress so you might consider trying the moisture holding polymers in the soil next time. Other remedies include adding organic matter to the soil to increase its moisture holding capacity, using a mulch, and in some cases spraying plants with a blossom end rot spray (contains calcium) which can usually be purchased from your local garden center. Usually, more attention to keeping the soil evenly moist will solve the problem. You might want to dig down into the soil a bit and see how effective your watering actually is -- it can surprise you.

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