How Long to Wait to Plant Watermelon After Fertilizer?

When using un-composted organics, gardeners should wait approximately one month before planting watermelons. When composted organics are used, planting can take place right away. Broadcast granular fertilizers over the planting site and work into the soil approximate 2 to 3 inches, right before planting, according to the University of Florida.

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About this Author

Joyce Starr is a freelance writer from Florida and owns a landscaping company and garden center. She has published articles about camping in Florida, lawncare, gardening and writes for a local gardening newsletter. She shares her love and knowledge of the outdoors and nature through her writing.