Gardening Tips for April for Longview, WA

Northwest Region

  • Prune your deciduous trees and shrubs. Also, thin out spring-blooming shrubs after the blossoms fade.
  • Spray apple and pear trees for scab when buds appear, to avoid disease.
  • Once dangers of hard frost have passed, prune roses. Remove all damaged wood, spindly canes, crossing branches, and blind shoots without flower buds.
  • Fertilize your berry plants. Spray insecticidal soup on strawberries if you spot aphids.
  • Fertilize any spring-blooming bulbs and ornamental plants that were not fertilized in March. Fertilize spring-blooming shrubs after they finish flowering.
  • Fertilize your lawn. Apply 1 pound of nitrogen per 1,000 square feet of lawn.
  • Plant beets, broccoli, brussels sprouts, cabbage, carrots, cauliflower, chard, lettuce, peas, and potatoes.
  • If soil temperature is above 60 degrees, you may plant beans and sweet corn.
  • If you have transplants in the yard, be sure to protect them from any late spring frosts with a cover.
  • If you’re planting, keep an eye out for slugs. Clean up weeds and hiding places quickly. Avoid insecticides that kill beneficials. Use slug control products with iron phosphate.
  • Reduce insects and disease in your garden by providing your plants with proper ventilation and removing all weeds.
  • Use floating row covers to keep insects such as beet leaf miners, cabbage maggot adult flies, and other insects away.
  • Start annuals, such as marigolds, zinnias, and cosmos, indoors.
  • Let foliage of spring-flowering bulbs brown. Once died down, divide if desired.
  • Consider planting drought-tolerant flowers, such as coneflowers, iris, and sedums.