Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Warrenton you can determine when it's a good idea to plant pennisetum by checking out the USDA zone info.

Planting Calendar for Pennisetum

Frost tolerance for pennisetum:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since pennisetum are barely cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

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

Last Frost Date

On average the last frost is on February 15 in Warrenton. You should expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Warrenton is an average the actual date of last frost will vary from year to year. Half of the time in Warrenton last frost occurs after February 15 so be sure to be ready to cover your pennisetum in the event of 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.