One of the first steps you take when you are determining 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.

The USDA zone info for Orange City can be used to figure out when it's the best time to plant thunbergia.

Planting Calendar for Thunbergia

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

Thunbergia require warm weather which means that you must wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant thunbergia in Orange City 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. Any later than that and your thunbergia may not have a chance to really do well. If you are starting your thunbergia 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 February 15 in Orange City. In the coldest months of winter you can expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Orange City is an average and the actual date of last frost is different every year. Half of the time in Orange City last frost occurs after February 15 so make sure that you are prepared to protect your thunbergia if you have one of those late frosts.

USDA Zone Info for Orange City

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 Orange City

You may be interested in your other planting guides for Orange City.