When can I plant Pampas Grass in Zone 4a

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

In Zone 4a you can estimate when to plant pampas grass by using the USDA zone info.


Planting Calendar for Pampas Grass

Frost tolerance for pampas grass: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Since pampas grass require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant pampas grass in Zone 4a 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 pampas grass and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pampas grass may not have a chance to really do well. If you are starting your pampas grass indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is May 15 in Zone 4a. It might get as low as -30°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Zone 4a may not be accurate from year to year and our actual date of last frost can change quite a bit from year to year. Half of the time in Zone 4a there is a last frost after May 15 so make sure that you are ready to cover your pampas grass if we have a surprise late frost.

USDA Zone Info for Zone 4a

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-30°F
Highest Expected Low-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Zone 4a

You may be interested in our other planting guides for Zone 4a.