The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when it's possible to plant pentas is to look at the USDA zone info for Paso Robles.

Planting Calendar for Pentas

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

It's probably not a good idea to plant pentas until after the last frost when the weather gets warmer because they require warm weather.

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

The last month that you can plant pentas and expect a good harvest is probably August. You probably don't want to wait any later than that or else your pentas may not have a chance to fully mature. Starting your pentas indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Paso Robles the average date of last frost happens on March 15. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Paso Robles is just an average the actual date of last frost will vary from year to year. Since half of the time in Paso Robles you get a frost after March 15 be ready to protect your pentas in the event of a surprise late frost.

USDA Zone Info for Paso Robles

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Paso Robles

You may be interested in your other planting guides for Paso Robles.