One of the first steps you take when you are making a decision about 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.

By referring to the USDA zone info for Platte City it's a good idea 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.

Gomphrena are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant gomphrena in Platte 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 gomphrena and expect a good harvest is probably August. You probably don't want to wait any later than that or else your gomphrena may not have a chance to really do well. You can get started a few weeks earlier by starting your gomphrena indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Platte City. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Platte City is just an average the actual date of last frost will vary from year to year. Half of the time in Platte City last frost occurs after April 15 so just be sure to be ready to cover your gomphrena in the event of a surprise late frost.

USDA Zone Info for Platte City

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Platte City

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