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

The first opportunity to plant pentas in Wasco can be estimated by using the USDA zone info.

Planting Calendar for Pentas

Frost tolerance for pentas:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's a bad idea to plant pentas until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant pentas in Wasco is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant pentas and expect a good harvest is probably September. Any later than that and your pentas may not have a chance to really do well. You can get started a couple of weeks earlier by starting your pentas indoors.

Last Frost Date

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

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Wasco and it will vary from year to year. Half of the time in Wasco there is a last frost after February 15 so always be ready to cover your pentas in the event of a surprise late frost.

USDA Zone Info for Wasco

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 Wasco

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