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

In Burlington you can estimate when it's the best time to plant calendula by checking out the USDA zone info.

Planting Calendar for Calendula

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

Since calendula are moderately cold tolerant you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant calendula in Burlington 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

The average date of last frost is March 15 in Burlington. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Burlington may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Burlington it frosts late in the year after March 15 be ready to protect your calendula if you have a late frost.

USDA Zone Info for Burlington

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Burlington

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