The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Arlington you can estimate when you can plant calendula by looking at 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.

You can plant calendula just a bit earlier in the year because they are moderately cold tolerant.

The earliest that you can plant calendula in Arlington 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. If you wait any later than that and your calendula may not have a chance to really do well. If you are starting your calendula indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is March 15 in Arlington. It might get as low as 10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Arlington may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Arlington it frosts late in the year after March 15 so be sure to be ready to protect your calendula if you have one of those late frosts.

USDA Zone Info for Arlington

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Arlington

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