What to Do in Your Garden in May

I spent a lot of time working in my yard during April. I planted several pots, pruned my shrubs, and put down a fresh layer of mulch. It would be easy to sit back and admire my hard work, but with the warmer weather coming in, there’s still so much to do!

Planting

• Plant crape myrtles when plants are in color.
• Plant annuals and perennials early in the month, and keep them well-watered.
• Set out chrysanthemums.
• Continue planting gladiolus. Can also plant calla lilies, ginger lilies, tuberose, and cannas.
• Take hydrangea cuttings and let them root in coarse sand.
• In the shade, plant impatiens, coleus, sweet alyssum, lobelia, and annual dianthus.
• In full sun, plant verbena, periwinkle, ageratum, marigolds, zinnias, petunias, wax begonia, clematis, four-o’clocks, and portulaca.
• Vegetables that should be planted this month: cucumbers, tomatoes, peppers, squash, peas, beans, eggplant, corn, okra, parsley, watermelons, and cantaloupe.

Pest Control

• Keep an eye on garden pests and diseases: red spiders, thrips, aphids, lacebugs, lacewings, mealy bugs, caterpillars, slugs, snails, mildew, fungus, and crown rot.

Pruning

• This is the last month to prune azaleas and camellias before new buds form in June.
• Prune your gardenias and bring a bouquet of clippings inside to beautify the house.
• Cutting bouquets regularly will keep your plants pruned and prolong the blooming season. Cut in early morning or late afternoon, and put into water immediately.
• Remove seedpods from bulbs and irises because they sap the plants’ strength.

Mulch

• A mulch layer helps maintain moisture and can protect roots from temperature extremes.

Miscellaneous

• Water deeply during weeks that it does not rain.

Home Accent

• Repot house plants during their active growing period (April through September).
• May is a good month to repot and divide overcrowded ferns.

In Bloom

• confederate jasmine, gardenias, begonias, impatiens, salvia, geraniums, roses, hydrangeas, magnolias, azaleas, clematis, phlox, sweet william, deutzia, honeysuckle, golden-rain tree, pomegranate, mock orange, weigela

If you have any questions or problems while in your garden, the MSU Extension website is a great place to find answers!

Southern Gardening’s Facebook, Twitter, and Instagram accounts are also great resources for gardening tips and tricks. Be sure to give them a follow to get the latest information from Dr. Gary Bachman, MSU Extension horticulturist.

Happy gardening!