Be Patient! Michigan has a last frost date of May 30th, so, we still may have some over night frost, which you will need to take extra precaution for tender plants.
Garden Calendar
May
Fertilizer
At the beginning of May, before buds set. You may still use Dormant Oil Spray to control over-wintered pests and disease.
If you haven’t used Scotts® Step 1 you still have until Mid-May.
May 15th thru July 1st is the time to start using the Scotts® Step 2 Lawn Program.
Fertilize Roses, Annuals, Containers, and Perennials if you have not already this season.
Annuals
Early May is the time to plant Pansies, Snapdragons, Stock, Dianthus and Petunias.
Late May you should be able to start planting your annuals like Impatiens, Fuchsia, Salvia, Zinnias. Depending on the weather!
Watch the weather forecasts, and protect your plants with a cloth if the night calls for frost.
Begin applications of Deer/Rabbit Repellant.
Begin watering as necessary.
Perennials
All perennials may be planted outside at this time.
Divide early blooming perennials after they have finished flowering.
Divide late blooming perennials.
Set Plant Supports
Begin applications of Deer Repellant, Rabbit Repellant
Mulch perennial garden beds.
Begin watering as necessary.
Begin weeding.
Vegetables
May 15th the following plants can be planted: Brussels Sprouts, Early Cabbage, Early Cauliflower, Leek, Lettuce, Onions, Strawberry Plants, Sugar Snap Peas.
May 30th the following plants can be planted: Beans, Celery, Corn, Cucumbers, Eggplants, Herbs, Kohlrabi, Melons, Peppers, Pickles, Squash, and Tomatoes.
Shrubs & Trees
Begin planting deciduous trees and evergreen shrubs.
Mulch Azaleas and Rhododendrons.