Home > Some Help with Gardening > Garden To-Do List by Zone > Zone 6
February To-Do List for Zone 6
  • Under fluorescent lights, start seeds of onions and leeks at the beginning of the month.
  • Near the end of the month, start seeds of broccoli, cabbage, cauliflower, and Brussels sprouts indoors under lights.
  • Start slow-growing flowers, such as garden verbena (Verbena hybrida), stocks (Matthiola incana), wallflowers (Cheirianthus cheiri), and ageratum indoors.
  • If winter has been mild, transplant trees, shrubs, and roses.
  • For the earliest tomatoes, start seeds of ‘Mountain Princess' under lights now. In April, set out the transplants.
  • Sharpen pruning shears and use them to prune fruit trees, brambles, grapevines, and late summer–blooming shrubs.
  • Rinse houseplants by setting them beneath your shower.
March To-Do List For Zone 6
  • If you've had a mild winter, look for hosta shoots poking up through the soil. Dig up clumps that need to be divided, split them apart, and replant them. Water generously.
  • Free the foliage from spring-blooming bulbs that are tangled in mulch.
  • If the weather's mild, plant roses, trees, and shrubs.
  • Move cool-loving broccoli, cabbage, and cauliflower outdoors to a coldframe or protected spot.
  • Start seeds of tomatoes, peppers, eggplants, perennials, and annual flowers indoors under lights.
  • As soon the garden soil is workable, plant peas, potatoes, sweet peas (Lathyrus odoratus), poppies (Papaver spp.), rocket larkspur (Consolida ajacis), and mignonette (Reseda odorata).
  • If there's no snow, top-dress the lawn with compost. Fill in low spots and reseed.
April To-Do List for Zone 6
  • Clean up the garden in preparation for the season ahead: Remove last year's dead plants, rake back winter mulches, and top-dress beds with compost.
  • After you've finished preparing your beds, plant potatoes, peas, spinach, and other leafy greens as well as beets, turnips, and carrots.
  • Put up a trellis for tall varieties of peas as soon as they sprout.
  • Dig, divide, and replant perennials, such as helenium, fall asters, Shasta daisies, chrysanthemums, and phlox.
  • As soon as the weather settles, plant transplants of pansies, forget-me-nots (Myosotis spp.), foxglove (Digitalis spp.), and other cool-weather flowers.
  • Sow seeds of sweet peas, bachelor's buttons (Centaurea cyanus), and larkspur (Consolida ajacis) in flowerbeds.

May To-Do List for Zone 6
  • Plant out tomato transplants early in the month and those of peppers and eggplants by the end of the month.
  • Direct-seed squash, beans, corn, and okra.
  • Plant a few more runs of leafy greens.
  • Sow sunflowers, zinnias, marigolds. and cosmos wherever you need an extra splash of color.
  • Mulch roses with a 1-inch layer of compost.

June To-Do List for Zone 6
  • Place supports for lanky perennials.
  • Pinch back chrysanthemums to keep them bushy—1⁄2 inch from the growing tips, every 2 weeks until the middle of next month.
  • Prune spring-flowering shrubs after they’ve finished blooming.
  • Cage tomatoes, peppers, and eggplant.
  • Replace finished lettuce with okra or a late crop of summer squash.
  • Plant a few more runs of corn, beans, and cucumbers.
  • Plant sweet potato slips early in the month.
  • Inventory seeds for the fall garden.

July To-Do List for Zone 6
  • Keep harvesting veggies and annual flowers regularly to keep plants producing.
  • Plant last runs of bush beans and summer squash.
  • For fall harvest, sow carrots, kale, beets, and chard for fall crops; also set out transplants of cabbage, cauliflower, and broccoli.
  • Prune out old, woody raspberry and blackberry canes.
  • Presprout and then sow, snap, shelling, or snow peas.