Landscaping Tips for the Month of June

Chores and Maintenance:

  • Continue to cultivate planting beds to remove weeds
  • Continue to dig and divide early-blooming perennials after flowering
  • Water, water, water as necessary
  • Continue to mulch planting beds
  • Set supports for floppy plants, vines and vegetables
  • Deadhead rhododendrons, lilacs and perennials after flowering
  • Add to, aerate and moisten compost pile to speed decomposition
  • Continue to check for pests and other problems and treat as necessary
  • Mow lawns regularly to keep grass at 2-2in. height
  • Leave grass clippings on lawn to improve availability of nitrogen
  • Water lawns if there is less than 1 in. of rain per week
  • Harvest cool-weather lettuce, radishes and scallions
  • Begin to spray roses every week with baking soda solution* to protect against black spot disease
  • Continue application of deer repellents

* Formula consists of: 3 tsp. baking soda, 2tbs. summer-weight horticultural oil, mixed with 1 gallon of water.


  • Complete moving self-sown annuals and perennials to desired location
  • Sow seeds of fast-growing annuals like marigolds, zinnias, and cosmos directly in the garden
  • Sow seeds of heat-tolerant vegetables
  • Continue to plant and transplant perennials, weather and soil conditions permitting
  • Finish planting summer annuals
  • Complete planting summer-flowering bulbs such as cannas, gladiolas and dahlias
  • Plant caladium and tuberous begonias in shady spots


  • Continue to prune all plant material to remove any diseased, dead, weak or crossing branches
  • Complete pruning early spring-flowering shrubs
  • Prune evergreens and evergreen hedges into early summer
  • Continue deadheading roses
  • Fertilize roses after peak bloom
  • Complete fertilizing spring-flowering bulbs
  • Fertilize annuals and container plants
  • Fertilize vegetables

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