When can I plant Pennisetum in Zone 2b

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

The USDA zone info for Zone 2b should be reffered to in order to determine when you can plant pennisetum.


Planting Calendar for Pennisetum

Frost tolerance for pennisetum: Tolerant of a very small amount of frost.
When you should plant them: Up to 3 weeks before last frost.

You can plant pennisetum just a tiny bit earlier in the year because they do ok in moderate cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant pennisetum
Possibly ok, but a risky time to plant pennisetum
Probably not a good time to plant pennisetum

The earliest that you can plant pennisetum in Zone 2b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant pennisetum and expect a good harvest is probably August. Any later than that and your pennisetum may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your pennisetum indoors.

Last Frost Date

In Zone 2b the average date of last frost happens on May 15. In the coldest months of winter we can expect an average low temperature of -45°F.

Since the USDA zone info for Zone 2b is just an average our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 2b we get surprised by a frost after May 15 so be sure to be ready to cover your pennisetum in the event of a surprise late frost.

USDA Zone Info for Zone 2b

Here is the info for USDA Zone 2b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)August 15
Lowest Expected Low-45°F
Highest Expected Low-40°F

This means that on a really cold year, the coldest it will get is -45°F. On most years you should be prepared to experience lows near -40°F.

Plants to Grow in Zone 2b

You may be interested in our other planting guides for Zone 2b.