One of the first steps you take when you are estimating 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 USDA zone info for Horseheads can be looked at to determine when you can plant tithonia.

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 it's important 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 Horseheads 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 fully mature. Starting your tithonia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Horseheads. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Horseheads may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Horseheads there is a last frost after April 15 be ready to cover your tithonia in the event of a surprise late frost.

USDA Zone Info for Horseheads

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 Horseheads

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