The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to determine when you can plant tithonia by looking at the USDA zone info for Cortland.

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 need to wait until after the last frost before you can plant them.

The earliest that you can plant tithonia in Cortland 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. Any later than that and your tithonia may not have a chance to really do well. Starting your tithonia indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Cortland. You should expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Cortland may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Cortland you get surprised by a frost after April 15 so be sure to be ready to protect your tithonia in the event of one of those late frosts.

USDA Zone Info for Cortland

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 Cortland

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