One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant peonies in Coos Bay should be estimated by using 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 Coos Bay 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 peonies and expect a good harvest is probably September. Any later than that and your peonies may not have a chance to really do well. You can get started a little bit earlier by starting your peonies indoors.

Last Frost Date

The average date of last frost is February 15 in Coos Bay. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Coos Bay is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Coos Bay last frost occurs after February 15 be ready to cover your peonies in the event of one of those late frosts.

USDA Zone Info for Coos Bay

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 Coos Bay

You may be interested in your other planting guides for Coos Bay.