If you have an abundance of asparagus that you usually harvest in the spring, allow part of the spears to grow throughout the summer into tall feathery stalks. Then cut them to the ground in September and in a few weeks, you will find new shoots for fresh asparagus in September. Now is a good time to plant onion sets and seed potatoes. It's a good idea to sprinkle Diazinon dust on top of the onion sets to prevent onion maggot. If you're starting seeds indoors, be sure and choose a quality soil mix that is light and airy and free of weeds, disease or insects.
Perennials can go out in the garden now.
Start planting Columbine, Shasta Daisies, Poppies, Lupine Primrose and many other perennials. If you mix Polymer crystals into the soil before you plant, watering can be cut in half. Roses need to be fed now to ensure good flowering. To help control insects, try using rose food with a systemic insecticide. Reactivate the microbes in your compost with a prepared compost maker product.