The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of estimating when to plant calendula is to look at the USDA zone info for Seabrook.

Planting Calendar for Calendula

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

Calendula do ok in moderate cold which means that you can plant them a little earlier in the year than more sensitive plants.

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

The last month that you can plant calendula and expect a good harvest is probably October. Any later than that and your calendula may not have a chance to fully mature. You can get started a few weeks earlier by starting your calendula indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Seabrook. You can expect an average low temperature of 20°F in the coldest months of winter.

Remember that the actual date of last frost is an average because it is based on the USDA zone info for Seabrook and it can change quite a bit from year to year. Since half of the time in Seabrook you get surprised by a frost after February 15 be ready to protect your calendula in the event of one of those late frosts.

USDA Zone Info for Seabrook

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Seabrook

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