One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By looking at the USDA zone info for Redmond it's a good idea to estimate when to plant polygonums.

Planting Calendar for Polygonums

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

Since polygonums are not cold tolerant you really should wait until after the last frost before you can plant them.

The earliest that you can plant polygonums in Redmond 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. You probably don't want to wait any later than that or else your polygonums may not have a chance to fully mature. If you are starting your polygonums indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for Redmond is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Redmond it frosts late in the year after March 15 so make sure that you are ready to protect your polygonums in the event of one of those late frosts.

USDA Zone Info for Redmond

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 Redmond

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