When can I plant Rosemary in Zone 6b

Before planting it is a good idea to find our USDA Zone info to estimate our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

It's a good idea to estimate when it's the best time to plant rosemary by referring to the USDA zone info for Zone 6b.


Planting Calendar for Rosemary

Frost tolerance for rosemary: Very tolerant of frost.
When you should plant them: Up to 7 weeks before last frost.

You can plant rosemary a lot earlier in the year because they do well in cold.

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

The earliest that you can plant rosemary 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 rosemary and expect a good harvest is probably September. Any later than that and your rosemary may not have a chance to grow to maturity. Starting your rosemary indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Zone 6b. We can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Zone 6b is an average our actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 6b there is a last frost after April 15 be ready to protect your rosemary 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.