When can I plant Lunaria in Zone 4b

One of the first steps we take when we are getting a good idea 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.

You will be able to figure out when it's possible to plant lunaria by referring to the USDA zone info for Zone 4b.


Planting Calendar for Lunaria

Frost tolerance for lunaria: Tolerant of some frost.
When you should plant them: Up to 5 weeks before last frost.

Since lunaria do well in moderate cold you can plant them a bit earlier in the year than more sensitive plants.

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

The earliest that you can plant lunaria in Zone 4b is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant lunaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your lunaria may not have a chance to grow to maturity. If you are starting your lunaria indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Zone 4b the average date of last frost happens on May 15. We can expect an average low temperature of -25°F in the coldest months of winter.

It's important 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 can change quite a bit from year to year. Since half of the time in Zone 4b it frosts late in the year after May 15 be ready to protect your lunaria if we have one of those late frosts.

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.