When can I plant Lemon grass in Zone 4b

Before planting it is a good idea to find our USDA Zone info to estimate our garden schedule. 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 lemon grass in Zone 4b can be figured out by looking at the USDA zone info.


Planting Calendar for Lemon grass

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

You can plant lemon grass slightly earlier in the year because they are barely cold tolerant.

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

The earliest that you can plant lemon grass in Zone 4b 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 lemon grass and expect a good harvest is probably August. If you wait any later than that and your lemon grass may not have a chance to grow to maturity. If you are starting your lemon 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 4b. We should expect an average low temperature of -25°F in the coldest months of winter.

Just be sure to remember that our actual date of last frost is an average because it is based on the USDA zone info for Zone 4b and it will vary from year to year. Since half of the time in Zone 4b last frost occurs after May 15 be ready to protect your lemon grass if we have 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 our other planting guides for Zone 4b.