One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Brownsville you can estimate when it's possible to plant larkspur by referring to the USDA zone info.

Planting Calendar for Larkspur

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

Larkspur tend to make it in a bit of cold which tells us that you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant larkspur 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 larkspur and expect a good harvest is probably October. You probably don't want to wait any later than that or else your larkspur may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your larkspur indoors.

Last Frost Date

In Brownsville the average date of last frost happens on January 31. In the coldest months of winter you can expect an average low temperature of 30°F.

Remember that USDA zone info for Brownsville is just an average and the actual date of last frost is different every year. Half of the time in Brownsville you get surprised by a frost after January 31 so make sure that you are prepared to protect your larkspur 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.