The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. 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 Trinity should be reviewed to estimate when it's a good idea to plant gomphrena.

Planting Calendar for Gomphrena

Frost tolerance for gomphrena:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since gomphrena do ok in moderate cold you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant gomphrena in Trinity 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 gomphrena and expect a good harvest is probably August. Any later than that and your gomphrena may not have a chance to grow to maturity. If you are starting your gomphrena indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Trinity. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Trinity is an average the actual date of last frost is different every year. Half of the time in Trinity it frosts late in the year after April 15 so be sure to be ready to cover your gomphrena in the event of a surprise late frost.

USDA Zone Info for Trinity

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Trinity

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