Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. 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 checking out the USDA zone info for Lawrence.

Planting Calendar for Tithonia

Frost tolerance for tithonia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since tithonia do not do well in cold weather you really should wait until after the last frost before you can plant them.

The earliest that you can plant tithonia in Lawrence 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. You can get started a couple of weeks earlier by starting your tithonia indoors.

Last Frost Date

The average date of last frost is April 15 in Lawrence. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Lawrence may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Lawrence it frosts late in the year after April 15 so just be sure to be ready to cover your tithonia in the event of one of those late frosts.

USDA Zone Info for Lawrence

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 Lawrence

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