The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Castle Rock it's possible to figure out when you can plant pea.

Planting Calendar for Pea

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

Pea do ok in pretty solid cold which means that you can plant them quite a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant pea in Castle Rock 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 pea and expect a good harvest is probably September. If you wait any later than that and your pea may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your pea indoors.

Last Frost Date

The average date of last frost is April 15 in Castle Rock. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Castle Rock is just an average and the actual date of last frost changes from year to year. Half of the time in Castle Rock it frosts late in the year after April 15 so be sure to be ready to protect your pea in the event of one of those late frosts.

USDA Zone Info for Castle Rock

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 Castle Rock

You may be interested in your other planting guides for Castle Rock.