One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant tagetes in Billings can be estimated by checking out the USDA zone info.

Planting Calendar for Tagetes

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

Tagetes require warm weather which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant tagetes in Billings is May. However, you really should wait until June 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. If you are starting your tagetes indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Billings. It might get as low as -25°F during the coldest months of winter.

Always keep in mind that USDA zone info for Billings may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Billings you get a frost after May 15 be ready to protect your tagetes in the event of one of those late frosts.

USDA Zone Info for Billings

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Billings

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