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 best time to plant polygonums in Tillamook can be determined by referring to the USDA zone info.

Planting Calendar for Polygonums

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

It's probably not a good idea to plant polygonums until after the last frost has passed because they require warm weather.

The earliest that you can plant polygonums in Tillamook 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 polygonums and expect a good harvest is probably August. If you wait any later than that and your polygonums may not have a chance to really do well. You can get started a few weeks earlier by starting your polygonums indoors.

Last Frost Date

The average date of last frost is March 15 in Tillamook. You can expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Tillamook is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Tillamook you get a frost after March 15 be ready to cover your polygonums if you have a late frost.

USDA Zone Info for Tillamook

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 Tillamook

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