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 Forest Grove you can determine when it's possible to plant peonies by checking out the USDA zone info.

Planting Calendar for Peonies

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

You can plant peonies a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant peonies in Forest Grove 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 peonies and expect a good harvest is probably August. If you wait any later than that and your peonies may not have a chance to grow to maturity. Starting your peonies indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Forest Grove. In the coldest months of winter you can expect an average low temperature of 15°F.

Keep in mind that USDA zone info for Forest Grove is not always accurate and the actual date of last frost changes from year to year. Half of the time in Forest Grove you get a frost after March 15 so always be ready to cover your peonies in the event of a surprise late frost.

USDA Zone Info for Forest Grove

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 Forest Grove

You may be interested in your other planting guides for Forest Grove.