The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of making a decision about when you can plant snow peas is to look at the USDA zone info for Granite City.

Planting Calendar for Snow peas

Frost tolerance for snow peas:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Snow peas are one of those plants that can tolerate quite a bit of cold weather which means that you can get them planted much earlier than plants that are more sensitive to the cold.

The earliest that you can plant snow peas in Granite City is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant snow peas and expect a good harvest is probably September. Any later than that and your snow peas may not have a chance to grow to maturity. If you are starting your snow peas indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Granite City the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -5°F.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Granite City and it will vary from year to year. Since half of the time in Granite City last frost occurs after April 15 be ready to protect your snow peas if you have one of those late frosts.

USDA Zone Info for Granite City

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Granite City

You may be interested in your other planting guides for Granite City.