how to control mold in garden
Daconil treatment x 3 or 4 with recommended dilution did not control the mold. How do you suggest growing plants next year? We may just give up on a garden. Apparently mold is in the soil or under leaves we treated. Also for the first time, our tomatoes had some possible disease. Garden spot is tiny so rotating planting in a different area may not be effective. We tried not to water in the evening. Please help.
Benzie County Michigan
Daconil is a broad spectrum fungicide, recommended for a variety of plants to treat a variety of problems. If you could please provide a bit of additional information--what types of plants were infected, what were the symptoms, etc.--I may be able to provide more specific suggestions for the next growing season.
In general, there are several things that you can do to help minimize the chance for infection. One is to create a barrier between the soil and the plants. Either landscape fabric or mulch will accomplish this. There are also plastic materials available, but if you use plastic, you will need to run irrigation under it, since it isn't water permeable.
When you irrigate, water at the base of the plants. The less time the leaves spend wet, the less opportunity the fungus spores have to germinate and infect them. In addition to hand watering, you can accomplish this using soaker hoses, or, if you are using your lawn sprinkler system, adding drip irrigation adapters in the garden area.
Space your plants far enough apart to allow air to circulate--also helping to keep the leaves dry. (Some garden plants, like tomatoes, can actually be thinned, to allow air to circulate through the plant.)