When can I plant Pennisetum in Zone 3b

One of the first steps we take when we are figuring out our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The first chance to plant pennisetum in Zone 3b should be figured out by referring to the USDA zone info.


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.

Pennisetum tend to make it in some cold which tells us that you can plant them just a tiny bit earlier in the year than other frost tender plants.

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 3b is April. However, you really should wait until May 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 grow to maturity. Starting your pennisetum indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 3b. It might get as low as -35°F during the coldest months of winter.

Since the USDA zone info for Zone 3b is not always accurate our actual date of last frost changes from year to year. Since half of the time in Zone 3b we get surprised by a frost after May 15 be ready to protect your pennisetum if we have a surprise late frost.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-35°F
Highest Expected Low-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in our other planting guides for Zone 3b.