The USDA Zone info is a great tool for gardeners to help us estimate your gardening 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 estimate when you can plant salvia by checking out the USDA zone info.

Planting Calendar for Salvia

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

Since salvia are barely cold tolerant you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant salvia 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 salvia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your salvia may not have a chance to really do well. You can get started a few weeks earlier by starting your salvia indoors.

Last Frost Date

On average the last frost is on March 15 in Forest Grove. In the coldest months of winter you should expect an average low temperature of 15°F.

Since the USDA zone info for Forest Grove may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Forest Grove there is a last frost after March 15 so just be sure to be ready to protect your salvia if you have one of those late frosts.

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.