One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant snow peas in Highland Park can be determined by using the USDA zone info.

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 much earlier in the year than other frost tender plants.

The earliest that you can plant snow peas in Highland Park 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. You can get started a few weeks earlier by starting your snow peas indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Highland Park. In the coldest months of winter you can expect an average low temperature of -15°F.

Since the USDA zone info for Highland Park may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Highland Park you get a frost after April 15 so be sure to be ready to protect your snow peas if you have one of those late frosts.

USDA Zone Info for Highland Park

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 Highland Park

You may be interested in your other planting guides for Highland Park.