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.

The first chance to plant red hot pokers in Zone 4b can be figured out by checking out the USDA zone info.

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.

You can plant red hot pokers much earlier in the year because they are very cold tolerant.

The earliest that you can plant red hot pokers in Zone 4b is March. However, you really should wait until April 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 August. You probably don't want to wait any later than that or else your red hot pokers may not have a chance to really do well. Starting your red hot pokers indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Zone 4b. In the coldest months of winter you should expect an average low temperature of -25°F.

Just be sure to remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Zone 4b and it will vary from year to year. Half of the time in Zone 4b you get a frost after May 15 so make sure that you are ready to protect your red hot pokers in the event of a late frost.

USDA Zone Info for Zone 4b

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Zone 4b

You may be interested in your other planting guides for Zone 4b.