The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Madison Heights you can estimate when it's a good idea to plant tithonia by using the USDA zone info.

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 are not cold tolerant you must wait until after the last frost before you can plant them.

The earliest that you can plant tithonia in Madison Heights 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 grow to maturity. If you are starting your tithonia indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Madison Heights. You can expect an average low temperature of -10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Madison Heights is just an average and the actual date of last frost is different every year. Since half of the time in Madison Heights you get a frost after April 15 be ready to protect your tithonia if you have one of those late frosts.

USDA Zone Info for Madison Heights

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 Madison Heights

You may be interested in your other planting guides for Madison Heights.