The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to figure out when to plant chrysanthemums by referring to the USDA zone info for Tomball.

Planting Calendar for Chrysanthemums

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

Since chrysanthemums do ok in moderate cold you can plant them slightly earlier in the year than plants that are more sensitive to the cold.

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

The last month that you can plant chrysanthemums and expect a good harvest is probably September. You probably don't want to wait any later than that or else your chrysanthemums may not have a chance to grow to maturity. Starting your chrysanthemums indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is February 15 in Tomball. You can expect an average low temperature of 20°F in the coldest months of winter.

Keep in mind that USDA zone info for Tomball may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Tomball you get a frost after February 15 so just be sure to be ready to protect your chrysanthemums 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.