One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of making a decision about when you can plant thunbergia is to consult the USDA zone info for Corcoran.

Planting Calendar for Thunbergia

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

Since thunbergia do not do well in cold weather you must wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant thunbergia in Corcoran 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 grow to maturity. Starting your thunbergia indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Corcoran. You can expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Corcoran may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Corcoran it frosts late in the year after February 15 be ready to cover your thunbergia in the event of a surprise late frost.

USDA Zone Info for Corcoran

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Corcoran

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