My tomato plants have some blossoms but there are few to no tomatoes. The plants are 3 months old. On the very end of the yellow blossom, there is a small brown spot. I have about 20 plants.
Certified GKH Gardening Expert
This happens due to a lack of pollination. This summer has been hard on tomato pollination due to the heat and humidity. You may need to hand pollinate. This article will help: https://www.gardeningknowhow.com/edible/vegetables/tomato/pollinate-tomatoes.htm