I have a voluntary watermelon that has grown around a cement bench where my grandsons sat and ate watermelon. It has grown huge & I can't even see the bench anymore but a couple days ago I noticed white powdery looking spots on the leaves at the back of the plant and today I saw that it has spread to more of the leaves. What is this and how do I fix it? Please help I really wanted the kids to eat a watermelon from the surprise plant that grew for them. What can I do to save it?
I have a voluntary watermelon that has grown around a cement bench where my grandsons sat and ate watermelon. It has grown huge & I can't even see the bench anymore but a couple days ago I noticed white powdery looking spots on the leaves at the back of the plant and today I saw that it has spread to more of the leaves. What is this and how do I fix it? Please help I really wanted the kids to eat a watermelon from the surprise plant that grew for them. What can I do to save it?