One of the first steps you take when you are determining 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 referring to the USDA zone info for Harvard it's a good idea to estimate when you can 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.

Red Hot Pokers do well in cold which tells us that you can plant them much earlier than more sensitive plants.

The earliest that you can plant red hot pokers in Harvard 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 really do well. You can get started a few weeks earlier by starting your red hot pokers indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Harvard is just an average and the actual date of last frost changes from year to year. Half of the time in Harvard you get a frost after April 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 Harvard

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 Harvard

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