Why Do My Greenhouse-grown Tomatoes Have Thousands Of Flowers But No Fruit?

Question

My tomato plants have been flowering vigorously for the last two months, with thousands and thousands of flowers, but they refuse to develop into fruit. The soil is good and rich, they’re well watered and they get fed regularly with a seaweed-based liquid fertiliser, but still nothing…..

Answer 1

It sounds like they are receiving too much nitrogen. This, or a lack of phosphorus and potassium will lead to bloom drop. There are other reasons that this can happen, as well, but your description of the rich soil leads me to believe that there is too much nitrogen present.

Here are some articles that will help:

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm

https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossoms-no-tomatoes.htm

https://www.gardeningknowhow.com/edible/vegetables/tomato/growing-tomatoes-guide.htm