Yellowing Tomato Plant
Luckily, it doesn't sound like tomato blossom rot. In this instance, it may just be pests. Try this spray: Stir together 1 quart of water, 1 tsp of liquid dish soap and a pinch of cayenne pepper. Do not dilute before spraying on plants. Useful against aphids and scale insects. Organic controls include alcohol spray (isopropyl alcohol, straight or diluted), soapy emulsion (can be mixed w/alcohol), horticultural oil (read the directions) and pyrethrum spray. Soapy water/alcohol should be reapplied every 2-3 days for 2 weeks. Thank you for your interest in the Old Farmer's Almanac and our Web site.