Vegetable Planting Calendar

An important part of a successful vegetable garden is planting the garden at the proper time. The following planting times are guides for the Iowa City area. Be sure to take weather conditions, such as a delayed or wet spring, into consideration. Cool season crops can be planted in early spring. These vegetables can tolerate cold temperatures and light frosts with little or no damage. In Johnson County, crops for planting in late March or early April include: broccoli, brussels sprouts, cabbage, cauliflower, collards, kale, garlic, onions, potatoes, parsley, peas, and turnips. To extend the harvest time of short season crops, seed additional plantings ten days apart throughout the month of April and early May before the weather gets hot. Short season crops include beets, carrots, lettuce, radishes, and spinach. Warm season crops should be planted after the danger of frost has passed, usually after May fifth in Johnson County. These vegetables include: beans, cucumbers, eggplants, melons, peppers, pumpkins, sweetcorn, sweet potatoes, squash, and tomatoes. Additional plantings of beans and sweet corn can be made to extend the harvest season. Do not worry if the garden is not planted in May. Many crops can be planted until mid- to late June and still produce an adequate crop. When planting late in the season, select short maturing varieties for best results. To make the most efficient use of garden space, many crops can be planted after a short season crop has been harvested. Carrots, melons, peppers, and tomatoes can be easily planted after lettuce and radishes have been enjoyed. Short season crops then can be replanted in early August for fall enjoyment, especially those that prefer cooler temperatures. Additional information on planting a vegetable garden can be found at the Johnson County Extension office. Request bulletins Pm-534, Planting and Harvesting Times for Garden Vegetables, and Pm-819, Planting a Home Vegetable Garden.

This project has been funded by the Iowa Department of Agriculture and Land Stewardship through a grant from the U.S. Environmental Protection Agency.
Prepared by Beth Mankowski, educational materials development specialist; Sherry Rindels, extension horticulturist; and Richard Jauron, extension horticulturist.


This page part of the Pesticide Management and the Environment site at Iowa State University. Last updated [Macro error: Can't call the script because the name "gooddate" hasn't been defined.] by John VanDyk