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.

You will be able to estimate when it's the best time to plant tithonia by looking at the USDA zone info for Big Stone Gap.

Planting Calendar for Tithonia

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

Since tithonia are not cold tolerant you must wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant tithonia in Big Stone Gap 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 really do well. If you are starting your tithonia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Big Stone Gap. In the coldest months of winter you should expect an average low temperature of -5°F.

Always keep in mind that USDA zone info for Big Stone Gap is just an average and the actual date of last frost changes from year to year. Half of the time in Big Stone Gap last frost occurs after April 15 so always be ready to protect your tithonia if you have a surprise late frost.

USDA Zone Info for Big Stone Gap

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Big Stone Gap

You may be interested in your other planting guides for Big Stone Gap.