September is a great time to plant. The weather starts to cool and early rains make the soil easier to work with. Now is the time to plant trees, shrubs, fall bulbs, and perennials. Fall planting lets the roots develop
Cool season vegetables
Beans, tomatoes, peppers, zucchini, and basil will keep producing until frost arrives if they are thoroughly harvested every week. Remove any basil flowers that form. After frosts arrive, there will still be greens, brassicas, and root crops to pick.
Prevent pest and disease problems next year by removing plant waste on the ground that can become home to slugs and disease spores. Compost dead or dying disease-free annuals. Diseased plant parts go in the garbage.
Grow a cover crop
Grow your own fertilizer and improve the soil's texture by planting cover crops where you plan to garden next year.