This Month in the Garden: September

Harvest Time 1
Autumn arrives, array’d in splendid mien;
   Vines, cluster’d full, add to the beauteous scene,
      And fruit-trees cloth’d profusely laden, nod,
            Compliant bowing to the fertile sod.

— Farmer’s Almanac, 1818

For the lawn:

  • Late in the month, begin fall lawn renovation, thatching, aerating and overseeding.
  • Plan and install new lawns with seed or sod.
  • September is the best time to fertilize lawns for strong roots. Use an organic or slow-release fertilizer that rain won’t wash away.

In the garden:

  • Keep all flowers picked.
  • Once the weather gets cooler, dig and divide your perennial plants and herbs.
  • Cut raspberry canes that bore fruit this summer back to the ground. Leave 7-10 strong
    new canes per plant.
  • Water trees and shrubs less; allow them to harden off.
  • Mulch trees and shrubs with wood chips, ground bark, or fall leaves to protect and
    nourish the soil.
  • Plant a winter cabbage such as Early Jersey Wakefield early in the month.
  • Sow winter choys and mustards — try Tokyo Beau and Mizuma.
  • Plant green manures (“cover crops”) like crimson clover, vetch, and field peas through October. (See our two-part post, Green Manures in Your Garden.)
  • Harvests abound! Enjoy the bounty.

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