If you’re looking to plant annuals in your flower garden this year, it’s time to get them into plots, pots and boxes. The threat of a frost ends mid-May in most areas of the United states, and you can safely plant most annuals immediately after. Wait a couple of weeks to put in tender plants such as impatiens, The Old Farmer’s Almanac says, and “harden” them in a sheltered spot or cold frame for a week or two if you started them from seed yourself. Mulch the beds to keep weeds at bay, and enjoy the array of colors as they bloom!