Can I Use Compost/manure Even After I Have Planted And Waiting For The Harvest?
I have planted butternut, watermelon and black pumpkin on the same soil that was never fertilized before planting. So, although the plants are growing they're also dying, I'm not sure it's because I didn't put in fertilizer before planting. In instances where they are growing, they are very slow and not growing enough to become big. They remain small forever.
Certified GKH Gardening Expert
Unfortunately, your photo did not come through. It will be hard to say for certain.
I would recommend, first, testing your soil. This will help you to know, exactly, what to add. This article will help you to test your soil: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
This will help you to test the pH of the soil: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm