I watered often. I check the soil with my finger every day to see if it needs water. In fact, the pot has mini mushrooms in it, so I let it dry out for a day or two, but I still check the soil everyday, to see if it needs water. It does have drainage holes.

thank you for the info.

Do you fertilize? How often? The plants look borderline chlorotic to me, but photos aren't always accurate on that front.

I fertilize every two months with osmocate fertilizer, like it says on the back.

Is that what the Osmocote label recommends for even container plants? Normally they require more frequent feeding than that but Osmocote isn't a commonly used fertilizer for tomato plants and it is clear from their color - assuming the photos are accurate - that it isn't providing them with enough nutrients and that is the primary problem.

Otherwise I agree with gorbelly that what is on your leaves appears to be from whatever you have sprayed or very minor pest damage So what have you been spraying them with?

"Blight" is just a catch-all term folks use for any leaf symptoms and has no actual meaning as such. But your plants don't show any obvious signs of any of the common tomato diseases including either Alternaria (aka Early Blight) or P. Infestans (aka Late Blight).

Dave

I use Daconil fungicide spray.

i fertilize with about a tablespoon of osmocate a pot. I don't know what the suggestion is about pots. I'll read the label soon.

If you have been spraying w/ Daconil then there isn't much you can do. Plus your plant does not look diseased tom, from the picture.

About container fertilizing, IMO, it is best to use water soluble. It would be difficult to use granular when there are lots of shallow roots.

Plus, once every two months probably is not adequate. This is because frequent watering tend to wash out some of the nutrients. I use 1/3 to 1/2 strength but often.

Sey

Agree with the others that once every two months is not often enough for container plants. Actually, it wouldn't be often enough for in-ground plants, either, IMO.

How often should I do it then?

The concept of using Osmocote is so you don't need to fertilize frequently but rely on slowly released nutrients. The problem with a heavy feeder like tomato is that you will need more. If you are growing at a deficit now just wait till you start harvesting. Since phosphorus and potassium are less mobile I would try to get those nutrients mixed into the potting mix and then just use soluble Calcium Nitrate throughout the production season when needed.

Thanks.