One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when it's a good idea to plant thunbergia in Altamonte Springs by reviewing the USDA zone info.

Planting Calendar for Thunbergia

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

It's probably a bad idea to plant thunbergia until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant thunbergia in Altamonte Springs is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant thunbergia and expect a good harvest is probably September. If you wait any later than that and your thunbergia may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your thunbergia indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Altamonte Springs. You can expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Altamonte Springs may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Altamonte Springs it frosts late in the year after February 15 be ready to protect your thunbergia if you have one of those late frosts.

USDA Zone Info for Altamonte Springs

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Altamonte Springs

You may be interested in your other planting guides for Altamonte Springs.