One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for New Haven it's possible to determine when it's a good idea to plant tagetes.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant tagetes until after the last frost because they require warm weather.

The earliest that you can plant tagetes in New Haven is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant tagetes and expect a good harvest is probably August. You probably don't want to wait any later than that or else your tagetes may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your tagetes indoors.

Last Frost Date

The average date of last frost is April 15 in New Haven. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for New Haven is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in New Haven you get a frost after April 15 be ready to protect your tagetes in the event of a surprise late frost.

USDA Zone Info for New Haven

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in New Haven

You may be interested in your other planting guides for New Haven.