Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when you can plant calendula is to consult the USDA zone info for Oxford.

Planting Calendar for Calendula

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

Calendula can survive in mild cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant calendula in Oxford 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. You probably don't want to wait any later than that or else your calendula may not have a chance to grow to maturity. You can get started a little bit earlier by starting your calendula indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Oxford. You should expect an average low temperature of -5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Oxford is just an average and the actual date of last frost is different every year. Half of the time in Oxford you get a frost after April 15 so just be sure to be ready to protect your calendula if you have one of those late frosts.

USDA Zone Info for Oxford

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 Low	0°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 Oxford

You may be interested in your other planting guides for Oxford.