One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Brownsville should be reffered to in order to estimate 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.

Since pyrethrum do well in moderate cold you can plant them a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant pyrethrum in Brownsville 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 pyrethrum and expect a good harvest is probably October. You probably don't want to wait any later than that or else 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 all chance of frost has passed is on January 31 in Brownsville. It might get as low as 30°F during the coldest months of winter.

Since the USDA zone info for Brownsville is an average the actual date of last frost is different every year. Since half of the time in Brownsville you get a frost after January 31 be ready to cover your pyrethrum in the event of a surprise late frost.

USDA Zone Info for Brownsville

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Brownsville

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