Gardening Tips for May for Las Vegas, NM

Southwest Region

  • Summer flowers can now be planted; plant summer bulbs such as cannas, dahlias, and gladiolus.
  • Pinch back growth of newly planted annuals and perennials; this will help the plants develop more flowers.
  • You can prolong the flowering season for your spring annuals by cutting off the old blossoms.
  • Cool-season vegetables will quickly decrease in quality once the weather gets hot. Be sure to harvest these vegetables and then replace them with warm-season vegetables such as okra and sweet potatoes.
  • Apply mulch around heat sensitive plants to keep the roots cool and to prevent water evaporation.
  • Put shade cloth over tomatoes.
  • Be aware of insects. Many bugs appear in May, including lace bugs, aphids, and bagworms.
  • Fertilize both cool-season and warm-season lawns.
  • Seed Bermuda and warm-season grasses as soon as the soil warms up. Apply 1 inch of water per week.
  • Once every 2 or 3 years, dethatch Bermuda lawns during their active growing season (May through August).
  • Continue fertilization of your rose bushes; liquid fertilizers can be added every two weeks.
  • Take care to keep deciduous fruit trees well-watered this month. Do not prune.
  • Cover fruit trees with netting to protect the fruit from bird damage.