Growing > Growing in Greenhouses & Polytunnels

Watermelons fruit drop

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Hortic:
Hi all. I have the watermelon 'Little Darling' in my greenhouse. The plant is happy and I and the bees successfully set three fruit. The fruit started to swell to the size of a large olive then shrivelled. I have a solar watering system and feed weekly with tomato fert so I'm not sure what's happened here. It did get very hot on Friday though I left the door open, as well as for the bees and hoverflies to access the flowers. Any ideas?

Subversive_plot:
This might provide some answers:  https://thehotpepper.com/threads/why-are-my-watermelons-keep-falling-off-of-the-vine-when-they-are-still-small.40166/

Good luck!

Hortic:
Thank you! I had a look through the posts and suspect the high daytime heat that the closed greenhouse was getting put too much stress on the plant. It's in a huge pot, on an automatic watering system with weekly tom feed and pollinated, so by process of elimination the heat is the problem. Next year I try a different placement. 

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