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.

One way of determining when it's possible to plant gomphrena is to look at the USDA zone info for Geneva.

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.

Gomphrena tend to make it in some cold which means that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant gomphrena in Geneva 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. You can get started a little bit earlier by starting your gomphrena indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Geneva. In the coldest months of winter you can expect an average low temperature of 15°F.

Always keep in mind that USDA zone info for Geneva is an average and the actual date of last frost is different every year. Since half of the time in Geneva last frost occurs after March 15 be ready to protect your gomphrena in the event of a surprise late frost.

USDA Zone Info for Geneva

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Geneva

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