The USDA Zone info is a great tool for gardeners to help us determine 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.

The USDA zone info for Sterling should be read to figure out when it's possible to plant red hot pokers.

Planting Calendar for Red Hot Pokers

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

Since red hot pokers do well in cold you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant red hot pokers in Sterling 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 red hot pokers and expect a good harvest is probably September. You probably don't want to wait any later than that or else your red hot pokers may not have a chance to grow to maturity. If you are starting your red hot pokers indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Sterling. In the coldest months of winter you should expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Sterling is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Sterling there is a last frost after April 15 be ready to protect your red hot pokers in the event of a surprise late frost.

USDA Zone Info for Sterling

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 Sterling

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