One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Grayslake you will be able to determine when it's the best time to plant snow peas.

Planting Calendar for Snow peas

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

Since snow peas are one of those plants that can tolerate quite a bit of cold weather you can plant them earlier in the year than other frost tender plants.

The earliest that you can plant snow peas in Grayslake 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. You probably don't want to wait any later than that or else your snow peas may not have a chance to really do well. You can get started a couple of weeks earlier by starting your snow peas indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Grayslake. You should expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Grayslake may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Half of the time in Grayslake there is a last frost after April 15 so make sure that you are ready to protect your snow peas if you have a surprise late frost.

USDA Zone Info for Grayslake

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Grayslake

You may be interested in your other planting guides for Grayslake.