Broccoli plants like to spread out in the garden, so it’s important to get broccoli plant spacing right. This cool-season annual vegetable yields one main head and, often, several smaller side shoots. But it’s the large leaves that grow around the broccoli head that make it possible for the plant to photosynthesize and grow. The broccoli plant leaves are kind of like solar panels for the broccoli head, and they need space to access the sun. This is a primary reason you should pay attention to where you place your seedlings.
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