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Take a look at what to do these upcoming months

Gardener's Calendar

GENERAL SPRING SEASON TIPS

  • Begin feeding bulbs with liquid fertilizer as they emerge from the ground.
  • Remove dead leaves from Hostas.
  • Prune summer-flowering shrubs in early spring before new growth, since they usually bloom from new wood.

APRIL

  • Remove Tree wrap from trees.
  • As the weather allows, remove winter mulch from roses, perennials, and bulbs.
  • Divide and replant overgrown perennials.
  • Prune hedges and summer flowering shrubs, i.e., Annabella Hydrangea, Currant, and Potentilla. Check for winter snow damage and prune out broken branches.
  • Till the flower and vegetable garden soil and add composted cow manure, peat moss, or composted leaves.
  • Fertilize spring bulbs when foliage emerges.
  • Plant frost-tolerant pansies and Johnny-jump-ups for early spring color.
  • Apply fresh mulch around trees and shrubs for weed control.
  • Fertilize trees and shrubs with Osmocote. We recommend slow-release fertilizer.
  • Wait until the ground is frost-free before removing mulch. If temperatures rise early in the season, remove part of the mulch, but leave 2-3 inches.
  • Till or spade the soil deeply; if desired, add a slow-release flower garden fertilizer.
  • Cut back ornamental grasses.
  • Remove rose cones.

MAY

  • Plant trees and shrubs as soon as the ground is dry enough for digging; late frost and snow will not hurt newly planted trees.
  • Apply crabgrass preventer to established lawns when nighttime temperature is 50 degrees for 3 nights in a row.
  • Work fertilizer into vegetable and flower gardens before they are planted.
  • Mulch flower gardens to conserve moisture and reduce weed growth. Landsburg’s carries 10 different choices.
  • Install peony hoops. They can also be used on Annabelle Hydrangea.
  • Fertilize roses and begin weekly maintenance against blackspot and mildew.
  • Seed new lawns while nights are still cool and spring rains are on their way.
  • Protect gardens from deer browsing.
  • Control dandelions and creeping charlie by applying herbicide before seed heads are formed.
  • Plant tender bedding plants, geraniums, vegetables, and bulbs after the danger of frost is over.
  • Plant summer-blooming bulbs such as Dinnerplate Dahlias, Calla Lilies, Cannas, and Gladiolas.
  • Apply pre-emergent weed control in shrub and planting beds. We recommend Treflan.
  • Remove accumulated leaves and debris from underneath evergreens and shrubs.
  • Prune forsythia, azaleas, and lilacs after they have flowered; all spring-flowering shrubs should be pruned right after flowering.
  • Begin apple-tree spray programs after blossoms drop. Stop in to Landsburg’s garden center for a free spray schedule.
  • Make sure freshly planted trees and shrubs are watered weekly, especially during dry periods. Continue to water through the season.
  • Prune mugho pines when new growth is fully grown and soft.
  • Fertilize established trees, evergreens, and shrubs. Start a fertilizer program.
  • Rake, overseed, and fertilize the lawn. Avoid applying crabgrass preventer to newly seeded areas. Seed new lawns while nights are still cool and the weather is wet.

GENERAL SUMMER SEASON TIPS

  • Deadheading (removing faded flowers and seed heads) directs the plant’s energy to more flowering rather than to producing seeds. It’s especially recommended for annuals. Pinch back phlox, asters, and mums to make them more flower-productive.
  • Fertilizers are best applied to azaleas, rhododendrons, and blueberries in spring. We recommend Hollytone Acid Fertilizer.
  • Use grass clippings as mulch around flowers. Do not use those that have had herbicides applied.
  • Leave the last rose blossoms of summer to encourage dormancy.
  • Apply slow-release fertilizer in midsummer to provide good plant performance until frost.

JUNE

  • Stake larger varieties of perennials such as delphiniums and lilies.
  • Begin leaf-spot control on tomato plants and stake young tomato plants; late-staking contributes to blossom end rot.
  • Tie climbing roses to trellises.
  • Perform the last pinching of chrysanthemums to promote compact, bushy plants.
  • Do the last picking of rhubarb at the month’s end to allow roots to store energy for next season.
  • Mulch your garden after the soil has warmed up later in the month.
  • Fertilize lawns, flowers, and gardens, and continue weeding. Reapply Treflan to perennial beds.
  • Prune and shape new growth on arborvitae, junipers, and yews.
  • Trim evergreens, including junipers.
  • Prune pines, spruce, and fir trees mid-month to the 4th of July.