Gardening Tips for May for Ashburn, VA

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Southeast Region

  • Make another planting of warm-weather vegetables such as beans, corn, squash, eggplant, tomato, and peppers. Southern favorites include okra, southern peas, and sweet potatoes.
  • Make sure that crops have plenty of mulch during dry spells.
  • Remove suckers from your tomato plants. Be sure that the plants are tied up on stakes or trellises and vines are not on the ground.
  • Continue to plant heat-loving herbs, including bail, oregano, sage, Mexican tarragon, and rosemary.
  • Watch out for insects devouring your plants, especially tomatoes. See Almanac.com/Gardening for our Pest pages to control them as early as possible.
  • Water early in the morning and deeply, avoiding leaves.
  • Fertilize your annual and perennial flower beds.
  • Remove any dead flowers from your plants to encourage new growth.
  • Plant annuals that can take the summer heat, such as angelonia, wax begonia, and ornamental pepper.
  • Plant bulbs for a summer of color, including early- to late-blooming varieties of daylilies.
  • Bring your houseplants outdoors to help rejuvenate them. Check them for any diseases or insects.
  • Newly planted shrubs require special attention. Be sure to keep them well watered and mulch around them if you have not already done so.
  • Keep your lawn healthy by watering, fertilizing with control-released nitrogen, and mowing regularly to prevent pests.
  • For healthy grass, avoid weed and feed products. Only apply herbicides to areas with weed infestations.
  • Watch out for lawn insects and use control measures. See your local lawn care center.
  • Mow your lawn at recommended heights (St. Augustine and Bahia: 3 to 4 inches; Centipede: 1.5 to 2 inches; Dwarf St. Augustine: 2.5 inches).
  • Finish pruning spring-flowering trees and shrubs after they bloom. Lightly prune azaleas.
  • Get ready for hurricane season. Check your trees for damaged or weak branches and prune as needed. Consult a professional.
  • Mulch between the rows in your garden to help control soil temperature and retain moisture.
  • Be sure to check your plants for any diseases or insects; treat them when necessary.
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