One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By looking at the USDA zone info for Tomball it's possible to figure out when it's a good idea to plant gayfeather.

Planting Calendar for Gayfeather

Frost tolerance for gayfeather:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Gayfeather can survive in quite a bit of cold which tells us that you can plant them much earlier in the year than other plants that might not handle the cold.

The earliest that you can plant gayfeather in Tomball is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant gayfeather and expect a good harvest is probably October. If you wait any later than that and your gayfeather may not have a chance to fully mature. Starting your gayfeather indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Tomball the average date of last frost happens on February 15. In the coldest months of winter you can expect an average low temperature of 20°F.

Just be sure to remember that USDA zone info for Tomball is an average and the actual date of last frost is different every year. Half of the time in Tomball there is a last frost after February 15 so make sure that you are prepared to protect your gayfeather if you have a surprise late frost.

USDA Zone Info for Tomball

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 Tomball

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