Last year I planted two chayote squashes on a large, sturdy trellis. One died, and the other was so damaged by a cold windy rain that it didn't bear fruit. However, it did regrow last summer, and is now a huge plant. In midsummer, I planted two more plants. (The plants can set fruit without cross pollination, but having a second plant nearby will help.) Those plants are still far to young to bloom, but the older one has flowers. So we are on watch for a fertilized female flower.
And here is a stem of male flowers. There are usually several male flowers on a long stem, separate from the female flowers. To get a fruit, you need a bee. There is a hive nearby, but will the bees come out? Will there be a sunny and warm enough day? One not too windy? I cross my fingers.
These photos are a week or two old now. I shall shoot again this week and see if any fruits are filling out yet.