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Pennsylvania Planting Guide
Pennsylvania Planting Guide. The northern portion of Pennsylvania is in U.S. Department of Agriculture Plant Hardiness Map zone 5, while the southern portion is in USDA plant hardiness zone 6. Planting times for the state are important, as both zones have long, cold winters and a short growing season in the summer.
The northern portion of Pennsylvania is in U.S. Department of Agriculture Plant Hardiness Map zone 5, while the southern portion is in USDA plant hardiness zone 6. Planting times for the state are important, as both zones have long, cold winters and a short growing season in the summer.
Time Frame
You can plant turnips, carrots, broccoli, collard greens, onions, garden peas and radishes as early as March 25. You should plant cabbage, asparagus, beets, kohlrabi, spinach and lettuce around April 1. Other crops shouldn't be planted until the beginning of May, including sweet corn, lima beans, cucumbers, squash, watermelon, tomatoes, okra, peppers and southern peas.
Considerations
Because of the short Pennsylvania growing season, starting plants in advance can give them a head start. Vegetables such as tomatoes need warm soil to germinate, and an indoor planting box can be the perfect environment to ensure that the seeds will germinate properly before being planted outside. Consider starting peppers, okra, tomatoes, cabbage and kale in advance.
Potential
If the plantings are timed right, you have time to plant a second crop of some hardy vegetables. For a fall harvest, plant mustard, radishes, spinach, turnips and beets for a second time in the beginning of August. Hardier vegetables like carrots, cabbage, cauliflower, broccoli and kohlrabi can be planted as late as the last week in September.
