When can I plant squash in my vegetable garden?
Summer and winter squash are warm-season crops. Plant squash after the danger of frost is past. In central Iowa, summer and winter squash can be planted in mid-May. Gardeners in southern Iowa can plant 1 week earlier. Plant 1 week later in northern portions of the state. Winter squash should be planted by mid-June. The last practical planting date for summer squash is mid-July.