One of the best tools that you have as gardeners to help us figure out 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.

A way of figuring out when you can plant tithonia is to check out the USDA zone info for Brewer.

Planting Calendar for Tithonia

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

Since tithonia require warm weather you have to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant tithonia in Brewer 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 tithonia and expect a good harvest is probably August. If you wait any later than that and your tithonia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your tithonia indoors.

Last Frost Date

On average the last frost is on April 15 in Brewer. In the coldest months of winter you can expect an average low temperature of -20°F.

Keep in mind that USDA zone info for Brewer is an average and the actual date of last frost changes from year to year. Since half of the time in Brewer it frosts late in the year after April 15 be ready to cover your tithonia if you have one of those late frosts.

USDA Zone Info for Brewer

Here is the info for USDA Zone 5a.

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

Plants to Grow in Brewer

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