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We have a potted tomato growing on the patio and a black area has appeared on the stem; leaves show no sign of distress. Have attached pictures. Does anyone know what this is, and if it can be cured?
All have an enjoyable and safe Independence Day weekend..
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When you plant tomatoes in your tomato patch again, be sure to mulch them well to prevent any soil from splashing up on the tomato stems and leaves. I put down several layers of newspapers and then straw on top of the newspaper. It works VERY well! It also keeps the weeds down and helps keep even moisture in the soil around the plants. Water the garden in the middle of the day so that the foliage has a chance to dry more quickly. It is also a good idea to plant varieties that are disease resistant.
The stem lesion on the tomato in the pot looks very much like the lesions that can form as a result of one of the blights, perhaps late blight. It is interesting that there are no symptoms on the leaves. It might be good to spray with a fungicide like Bonide Liquid Copper or Fung-onil or Daconil as a preventative measure.