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June Garden Calendar – NC Mountains

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Plants in Flower

  • Southern Magnolia, Golden Rain Tree, Mimosa, Smoketree, Rosebay Rhododendron, Oakleaf Hydrangea, Sweet Azalea, Gardenia, Rose, Summer Spirea, Florist Hydrangea, Yucca, Satsuki Azaleas, Hypericum, Trumpet Creeper, Phlox, Butterfly Weed, Daylily, Balloon Flower, Stokesia, Coreopsis, Poppy, Canna, Red Hot Poker, Rose-of-Sharon, and summer annuals.

wildflowersWhat to Fertilize

  • Fertilize or sidedress your vegetables as needed.

What to Plant

  • Start plants in June of Brussels sprouts and collards for transplanting into the garden in mid-July.
  • Plant the following vegetables in your garden in June: beans, lima beans, southern peas, pepper, sweet potato, pumpkin and tomato.

What to Prune

  • Late June is the recommended time to prune white pine. Trim new growth only.
  • Prune narrowleaf evergreens like juniper and arborvitae..
  • Prune the bigleaf or florist hydrangea when the flowers fade.
  • Trim hedges as needed.
  • Remove water sprouts on any fruit trees and crabapple.
  • Cut off the faded flowers of phlox, shasta daisy and daylily to encourage a second flowering.
  • Trim dried up foliage of your spring flowering bulbs.
  • Prune out dieback on hybrid rhododendron, azalea, mountain laurel, and blueberry.

Pest Outlook

  • Scout the following landscape shrubs for the following insect pests: arborvitae- bagworm; boxwood- leafminer; crapemyrtle – aphid; hemlock – spider mites; pyracantha – lace bug.
  • Check trees and shrubs for Japanese beetles.
  • Use low-impact pesticides such as Dipel or Spinosad on the following vegetables if insects are observed: cucumber (cucumber beetle), squash (squash borers and aphids), tomato and eggplant (flea beetle), broccoli, cabbage and cauliflower (worms).
  • Continue to follow your low-impact spray schedule for tree fruits and bunch grapes.
  • Check your asparagus plants for the asparagus beetle. Spray with the recommended organic insecticide if beetles are observed.
  • Watch for dark brown spots on your tomato leaves. If observed, spray with a fungicide for early blight.
  • Spray herbicides on the following woody weeds: poison ivy, honeysuckle and kudzu.
  • Use organic pesticides whenever possible and always use pesticides sparingly. Spray only when needed.

Lawn Care

  • Continue fertilizing zoysia this month. Do NOT fertilize tall fescue and bluegrass now.
  • Start zoysia in June.


  • Late June is the ideal time to take semi-hardwood cuttings. Azaleas, cotoneaster, camellia, holly, pieris, red-tip photinia and rhododendron cuttings should be taken in June or July.

Specific Chores

  • Build a coldframe for rooting your shrub cuttings.
  • Renovate your strawberry bed after the berry harvest is completed.
  • Water your favorite plants during periods of dry weather. Water early in the morning. Watering late in the day encourages plant disease growth.
  • Vegetable gardens need 1 inch of water per week.
  • Purchase locally grown blueberries.

All Year’s Garden Calendar

Written By

Steve Pettis, N.C. Cooperative ExtensionSteve Pettis, Jr.Extension Agent, Agriculture - Consumer and Commercial Horticulture Call Steve Email Steve N.C. Cooperative Extension, Henderson County Center
Page Last Updated: 2 years ago
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