Q.What is this vegetable?
Bought what I thought was a zucchini plant but it has morphed into what looks like a dark green butternut squash. Do you ha e any idea what this might be?
Certified GKH Gardening Expert
This is a zucchini. This can just happen sometimes when they need just a little more phosphorus and potassium. Make sure that soil is fertile, and does not contain too much nitrogen, or any slow release fertilizers. These will cause this symptom.
This article will give you some tips on growing these: https://www.gardeningknowhow.com/edible/vegetables/zucchini/growing-zucchini.htm