Answer: You are in USDA gardening zone 9. Both cucumbers and summer squash such as zucchini need full sunshine and warm temperatures. As soon as the weather suits them they will bloom and produce fruits. The first flowers on these plants are male so there's no chance of fruit with them, but as the plants mature and the weather warms, female flowers will be produced. Male flowers are attached to the vine by straight stems; female flowers have a slight swelling just behind the flower petals. If your plants are producing both male and female flowers and no fruit is being produced, the flowers are not being pollinated by flying insects. If there are no bees in your yard you may need to hand pollinate the flowers. Take a male flower off the plant and rub its insides into the insides of a female flower to transfer pollen. If you're successful, you'll have fruit.
Best wishes with your garden!
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