When can I plant Calendula in Zone 6b

The USDA Zone info is a great tool for gardeners to help us estimate our gardening 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 calendula in Zone 6b should be figured out by looking at the USDA zone info.


Planting Calendar for Calendula

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

Calendula are moderately cold tolerant which means that you can plant them earlier than plants that are more sensitive to the cold.

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

The earliest that you can plant calendula in Zone 6b is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant calendula and expect a good harvest is probably September. Any later than that and your calendula may not have a chance to really do well. You can get started a couple of weeks earlier by starting your calendula indoors.

Last Frost Date

In Zone 6b the average date of last frost happens on April 15. In the coldest months of winter we can expect an average low temperature of -5°F.

Since the USDA zone info for Zone 6b is an average our actual date of last frost will vary from year to year. Since half of the time in Zone 6b last frost occurs after April 15 be ready to cover your calendula if we have a late frost.

USDA Zone Info for Zone 6b

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-5°F
Highest Expected Low0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Zone 6b

You may be interested in our other planting guides for Zone 6b.