Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant thunbergia in Westfield can be determined by reviewing the USDA zone info.

Planting Calendar for Thunbergia

Frost tolerance for thunbergia:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Thunbergia require warm weather which tells us that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant thunbergia in Westfield 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 thunbergia and expect a good harvest is probably August. Any later than that and your thunbergia may not have a chance to fully mature. 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 is on April 15 in Westfield. In the coldest months of winter you should expect an average low temperature of 0°F.

Remember that USDA zone info for Westfield is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Westfield you get a frost after April 15 be ready to cover your thunbergia in the event of a surprise late frost.

USDA Zone Info for Westfield

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Westfield

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