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Home grown tomatoes are a gardeners pride and joy. Yet there are so many things that can go wrong along the way. Most tomato problems are the result of weather conditions that are out of our control. To persevere growing tomatoes, despite what nature throws at us, you have to know what you're dealing with and deal with it early. Here are some common tomato disease problems along with what to do about them.


August 17, 2009 at 10:57 am
(1) pat thimmig says:

My tomatoe leaves turn yellow then dry up the whole plant looks like its dying. I had the same problem last year. What am I doing wrong?

August 19, 2009 at 2:18 pm
(2) Marie Iannotti says:

If they’re just turning yellow and not spotting, it could be too much or too little water or not enough fertilizer. If there are black spots too, it’s one of the many, many fungal diseases that tomatoes get. Try a good organic fungicide or something like neem.

March 26, 2010 at 1:37 pm
(3) Martin says:

My tomatoes have rust coloured spots on the blooms and fruit

March 26, 2010 at 3:20 pm
(4) Marie Iannotti says:

Martin, it’s hard to say, without seeing the leaves. I don’t know that rust affects tomatoes, but many fungus diseases look a lot alike. Once you have a problem, it’s quick to spread.

The only thing to do is to remove the affected leaves and fruits. Then start spraying with either a copper fungicide or some other fungicide recommended for edible plants. Hopefully the new fruits will be fine.

Next year, plant your tomatoes in another area and keep watch, so you can catch any problems early.

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