Problem With Growing Yellow Squash
My squash looked good at the beginning, but then they started growing bumpy and hollow. Some of the squash are smooth and are not hollow. The squash that is hollow is about 6 or 7 inches long. Please help!
Certified GKH Gardening Expert
A number of things could be causing this. For instance, it could be due to extremely rapid growth, usually in periods of abundant moisture after drier growing conditions. Likewise, it could be attributed to squash rot from a calcium deficiency. Pests can also be an issue, such as squash borers, which are difficult to see as they usually burrow within the stems.
Here is an article or two that you may find helpful: https://www.gardeningknowhow.com/edible/vegetables/squash/squash-blossom-end-rot-causes-and-treatment.htm