Plant Gladiolus, Cannas and summer flowering bulbs in early May.
Allow the foliage on the spring blooming bulbs to die back and turn yellow before you remove it, this will help to ensure large healthy bulbs for next year.
Pansies, violas, snapdragons, dianthus and dusty miller can all be planted early while it is still cool, wait until the last chance of frost has passed, around Mid-May before planting your tender annuals. If there is a threat of freezing temperatures at night, be ready to cover the annuals to protect them.
If you must plant your annuals early, Liquid Fence makes a product called FreezePruf, that is a frost protector for ornamental, fruit and vegetable plants. For best results, it should be applied when the temperature is above 50 degrees, and at least 8-12 hours before an expected freeze. Protection will last up to 6 weeks. FreezePruf improves cold tolerance up to 9.4 degrees F, and protects foliage and flowers from ice crystal damage. A 32 oz. bottle of concentrate makes up to 1 gallon of ready-to-use product.
The soil should be warm enough by the middle of May to plant seeds. Be sure that the soil is not too wet, if you grab a clump in your hand, and it stays in a ball, it is too wet. The earth should crumble in your hands.
If doing the Scotts LawnPro Program, apply Step 2 Weed Control plus fertilizer.
If you haven't fertilized your trees or shrubs yet, do so now. Acid loving plants like Azaleas, Rhododendrons, Hollies, Camellias, Evergreens and Dogwoods will benefit from an application of Holly-Tone. Tree-tone is an all natural plant food for Shade, Fruit & Ornamental trees.
If needed, trim back spring blooming shrubs right after they are done blooming, this ensures you will not cut off the buds for next year.