The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Troutdale can be looked at to determine when it's a good idea to plant celeriac.

Planting Calendar for Celeriac

Frost tolerance for celeriac:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Celeriac can survive in mild cold which tells us that you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant celeriac in Troutdale 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 celeriac and expect a good harvest is probably September. Any later than that and your celeriac may not have a chance to really do well. You can get started a little bit earlier by starting your celeriac indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Troutdale. In the coldest months of winter you should expect an average low temperature of 15°F.

It's important to remember that USDA zone info for Troutdale may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Troutdale you get a frost after March 15 so always be ready to protect your celeriac if you have a late frost.

USDA Zone Info for Troutdale

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 Troutdale

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