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.

The first opportunity to plant chives in Tualatin can be estimated by using the USDA zone info.

Planting Calendar for Chives

Frost tolerance for chives:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Chives are very cold tolerant which means that you can plant them a quite a bit earlier than other frost tender plants.

The earliest that you can plant chives in Tualatin 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 chives and expect a good harvest is probably September. Any later than that and your chives may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your chives indoors.

Last Frost Date

On average the last frost is on March 15 in Tualatin. It might get as low as 15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Tualatin is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Tualatin last frost occurs after March 15 so make sure that you are prepared to protect your chives if you have a surprise late frost.

USDA Zone Info for Tualatin

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 Tualatin

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