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.

By checking out the USDA zone info for Texarkana it's a good idea to determine when it's a good idea to plant pyrethrum.

Planting Calendar for Pyrethrum

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

Pyrethrum do ok in a little bit of cold which tells us that you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant pyrethrum in Texarkana 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 pyrethrum and expect a good harvest is probably September. Any later than that and your pyrethrum may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your pyrethrum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Texarkana. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Texarkana is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Texarkana last frost occurs after March 15 be ready to cover your pyrethrum in the event of one of those late frosts.

USDA Zone Info for Texarkana

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Texarkana

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