Veggie Calendar
Planting dates and varieties for information and inspiration
PLANTING DATES
VARIETIES
CULTIVATION
MARCH: INDOOR STARTS
APRIL
MAY
JUNE
MID-SUMMER PLANTING + FALL HARVESTING
Squeezing a second crop of vegetables in before fall frost makes good use of garden space. Once spring crops are harvested, fertilize and prepare the soil for summer planting:
EARLY JULY
Crops that can be planted until mid-July include cabbage, collards, endive, green onions, New Zealand spinach, bush beans, cucumber, cauliflower, edible-podded peas and summer squash.
LATE JULY
Vegetables that can be planted until the end of July include Chinese cabbage, small length carrots like the Nantes varieties, broccoli and turnips.
AUGUST
Vegetables that will produce crops if planted until early August are kale, turnip greens and beets. Crops that produce until mid-August are leaf lettuce, mustard greens, spinach and Swiss chard. Radish can be planted as late as the first week of September.
Many greens make particularly good late crops as they can be harvested at any stage of growth.
EARLY OCT = FROST RISK | MID-LATE OCT = AVERAGE FIRST FROST
The above suggestions for summer planting are made based on the average hard frost dates for Boulder Colorado. There is always a risk of “early” frost at the beginning of October (from around Oct 2nd on). Most frosts are recorded from mid to late October (Oct 16th on). Remember that Colorado’s weather varies from year to year and frosts may come earlier or later.
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