Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Tomball you can figure out when it's possible to plant chrysocephalum by checking out the USDA zone info.

Planting Calendar for Chrysocephalum

Frost tolerance for chrysocephalum:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since chrysocephalum require warm weather it is important to wait until after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

On average the last frost has passed is on February 15 in Tomball. In the coldest months of winter you should expect an average low temperature of 20°F.

Since the USDA zone info for Tomball is not always accurate the actual date of last frost will vary from year to year. Half of the time in Tomball it frosts late in the year after February 15 so make sure that you are ready to protect your chrysocephalum in the event of one of those late frosts.

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.