One of the best tools that you have as gardeners to help us estimate your gardening schedule is the 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.

The first chance to plant aurinia in Tomball can be determined by using the USDA zone info.

Planting Calendar for Aurinia

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

Aurinia are very cold tolerant which means that you can plant them much earlier than other frost tender plants.

The earliest that you can plant aurinia 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 aurinia and expect a good harvest is probably October. Any later than that and your aurinia may not have a chance to really do well. You can get started a little bit earlier by starting your aurinia indoors.

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.

It's important to remember that USDA zone info for Tomball is just an average and the actual date of last frost is different every year. Since half of the time in Tomball last frost occurs after February 15 be ready to protect your aurinia if you have 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.