Last year was my first year at growing tomatoes. I chose Roma only because they were small and I was anxious to get a ripe tomato. They were not the best tasting. This year someone said to go with Early Boys or Hardy Girls or something like that so I bought four of the biggest plants I could find and planted them near a fence, thinking they would have support. They were doing great, having produced several ripe, red, and great tasting tomatoes in July. However, one of my tomato plants now has yellow leaves and is wilting and dying. I think this is one of the two major "wilts". The other three still look real good. I also put in one green pepper plant, which produced three green peppers early in July but now has no new fruit and looks just a little wilty. Any advise?