One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

It's possible to figure out when to plant flowering kale by checking out the USDA zone info for Warrenton.

Planting Calendar for Flowering Kale

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

Since flowering kale are moderately cold tolerant you can plant them just a bit earlier in the year than more sensitive plants.

The earliest that you can plant flowering kale in Warrenton 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 flowering kale and expect a good harvest is probably October. If you wait any later than that and your flowering kale may not have a chance to fully mature. You can get started a little bit earlier by starting your flowering kale indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Warrenton. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Warrenton is just an average the actual date of last frost changes from year to year. Half of the time in Warrenton it frosts late in the year after February 15 so always be ready to protect your flowering kale if you have a surprise late frost.

USDA Zone Info for Warrenton

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 Warrenton

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