Plant your summer flowering bulbs this month, dahlias, gladiolas and lilies are a few you can plant. Tuberous begonias cannas and caladiums should not be planted outdoors until danger of frost has passed.
Divide your perennials; phlox, daylilies, chrysanthemums, daisies, echinacea or rudbeckia. Go to "When to Divide Perennials" page to see which ones to divide.
Plant fruit trees and berry plants now in full sun. After danger of frost, buy your vegetables or sow your seeds outside. Always prepare your soil first. Good soil equals good plants.
Time to apply a spring fertilizer to your lawn. Just follow the directions on the bag.
Top dress or mulch your perennial beds, trees and shrubs. There are many to choose from on the market. Check your local garden centers for it. It will add nutrients and minerals to your soil, help retain moisture and keep the roots cool in the hot summer sun.
Remember to start your regiment of spraying your roses for black spot. I also use a systemic insecticide/fertilizer to help prevent infestation of aphids (they love roses!) later in the season. Prevention is the better way to go.