One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's possible to determine when it's possible to plant asparagus lettuce by checking out the USDA zone info for Forest Grove.

Planting Calendar for Asparagus lettuce

Frost tolerance for asparagus lettuce:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably not a good idea to plant asparagus lettuce until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant asparagus lettuce in Forest Grove 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 asparagus lettuce and expect a good harvest is probably August. Any later than that and your asparagus lettuce may not have a chance to fully mature. If you are starting your asparagus lettuce indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Forest Grove is an average the actual date of last frost will vary from year to year. Since half of the time in Forest Grove it frosts late in the year after March 15 be ready to protect your asparagus lettuce in the event of 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.