It appears there are various virus and diseases from my plants. The beds I prepared are new, from existing lawn. So I think the wood chips can be a problem. The problem plants are watermelons, hot peppers and cucumbers.

Should I ditch the wood chips and use plastic cover or other mulch instead. I can buy some farm hays, etc.

http://plant-pest-advisory.rutgers.edu/

Very accurate and helpful. Their reports can alert you to what to look for and tell you what is going on in your area.

I just pulled all my squash/melons since they were mostly lost to mildew. I am getting ready to put in cover crop and hopefully next year will be better.

My pumpkins have vine borers. Most of the Japanese Kabocha are lost since I caught them late. But the regular orange pumpkins are doing fine since they sent out strong stems. The 2nd batch Kabocha is doing fine.

The peppers still are very green, but lost leaves quickly (yellow with black spots). Not sure if fungus or diseases. Some small flies, but I do not think that is is the problem.

The tomatos are producing, but the lower leaves turn yellow and dropped. Now 2/5 of the lower leaves fell. The plants are about 5' tall. Lower yield than last year's.

The water melons were doing great. Then stopped growing. I did not see any bugs. Then the leaves turned yellow with black edges. Then the whole vines just died. The melons are about sugar baby size or smaller.

The blueberries did very well. Better yield than last year's. I think the wet weather somehow helps.

Anyhow, still something to learn for next season.