One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant calendula in Dunellen should be determined by referring to 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.

Calendula do well in mild 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 Dunellen 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. You can get started a few weeks earlier by starting your calendula indoors.

Last Frost Date

On average the last frost is on April 15 in Dunellen. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Dunellen is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Dunellen you get surprised by 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 Dunellen

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 Dunellen

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