Monthly Garden To Do List

Things to Plant in May!

Flower Plants:

Ageratum, Ajuga, Joseph’s Coat (Amaranthus), Balsam, Wax Begonia, Blue Daze, Blue Cardinal Flower, Boltonia, Scarlet Bouvardia, Calico Plant, Chocolate Plant, Cigar Plant (Cuphea Ignea), Cockscomb, Coleus, Columbine, Copper Plant, Coreopsis, Cosmos sulphureus, Dahlia, Shasta Daisy, Feverfew, Geranium, Gomphrena, Hibiscus, Hollyhock, Impatiens, Jacobinia, Lantana, Marigold (African, French, and Mexican Mint), Nierembergia, Penta, Periwinkle, Persian Shield, Plumbago, Phlox drummondii, Portulaca, Purslane, Purple Coneflower (Echinacea), Rudbeckia Hirta, Salvia, Sedum, Stokes’ Aster (Helianthus), Wishbone Flower (Torenia), Yarrow, Zinnia.


All Month: Amaranth, Jerusalem Artichoke (Sunchoke), Jicama, Malabar Spinach, Okra, Southern Pea, Peanut, Pumpkin, Sweet Potato, Tomatillo, Water Spinach, Watermelon.


Container grown plants can go in the ground.


Anise, Star Anise, Basil, Bay, Borage, Bouncing Bet, Caraway, Catnip, Chives, Comfrey, Costmary, Cumin, Fennel, Fenugreek, Scented Geranium, Germander, Horehound, Horseradish, Lamb’s Ear, Lavender, Lemon Grass, Lemon Verbena, Mexican Mint Marigold (a great substitute for French Tarragon), Monarda, Oregano, Perillia, Rosemary, Sage, Santolina, Summer Savory, Winter Savory, Sesame, Sorrel, Southernwood, Tansy, Tarragon, Thyme, Common Wormwood, Roman Wormwood, Yarrow.

Things To Do in May!


  • Feed all spring-blooming shrubs after they have bloomed. Feed amaryllis after they bloom.  Feed and milch iris. Feed crape myrtle with 1/2 cup /sq. yd. of 3-1-2 ratio fertilizer beneath the branch spread.


  • Water annuals as needed. Mulch all bare soil to retain moisture.

Diseases/Pests To Look For:

  • Check for aphids and spider mites.
  • Look for tobacco hornworms, spider mites, and stink bugs especially in vegetable gardens.
  • Spray peach and plum trees for curculio weevils when 3/4 of the petals have fallen. (repeat three times at two-week intervals)
  • Spray blackspot susceptible roses with fungicide every 7-10 days.
  • Need a plant problem identified? Just bring a sample in a zipblock bag to the Travis County Agrilife Extension Office, 1600 -B Smith Road.