One of the first steps you take when you are determining 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 referring to the USDA zone info for Oregon City you should be able to determine when it's possible to plant fennel.

Planting Calendar for Fennel

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

Fennel tend to make it in cold weather which means that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant fennel in Oregon City 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 fennel and expect a good harvest is probably September. If you wait any later than that and your fennel may not have a chance to really do well. Starting your fennel indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Oregon City the average date of last frost happens on March 15. In the coldest months of winter you can expect an average low temperature of 15°F.

Remember that USDA zone info for Oregon City may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Oregon City it frosts late in the year after March 15 be ready to cover your fennel in the event of a surprise late frost.

USDA Zone Info for Oregon City

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 Oregon City

You may be interested in your other planting guides for Oregon City.