Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when it's a good idea to plant tagetes in Exeter by referring to the USDA zone info.

Planting Calendar for Tagetes

Frost tolerance for tagetes:	Not tolerant of frost.
When to plant:	After the last frost.

Tagetes are not cold tolerant which means that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

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

The last month that you can plant tagetes and expect a good harvest is probably September. You probably don't want to wait any later than that or else your tagetes may not have a chance to really do well. If you are starting your tagetes indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Exeter the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Exeter may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Exeter you get a frost after February 15 so always be ready to protect your tagetes in the event of a late frost.

USDA Zone Info for Exeter

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Exeter

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