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.

In Killeen you can estimate when it's the best time to plant erysimum by referring to the USDA zone info.

Planting Calendar for Erysimum

Frost tolerance for erysimum:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Erysimum can survive in mild cold which means that you can plant them a little earlier in the year than other plants that might not handle the cold.

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

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Killeen. You can expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Killeen may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Killeen there is a last frost after March 15 so make sure that you are ready to cover your erysimum if you have one of those late frosts.

USDA Zone Info for Killeen

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Killeen

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