The USDA Zone info is a great tool for gardeners to help us estimate 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.

In Portland you can estimate when you can plant neeps by checking out the USDA zone info.

Planting Calendar for Neeps

Frost tolerance for neeps:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

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

The earliest that you can plant neeps in Portland 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 neeps and expect a good harvest is probably August. Any later than that and your neeps may not have a chance to really do well. If you are starting your neeps indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on March 15 in Portland. You can expect an average low temperature of 15°F in the coldest months of winter.

Keep in mind that USDA zone info for Portland 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 Portland it frosts late in the year after March 15 so make sure that you are prepared to cover your neeps if you have a surprise late frost.

USDA Zone Info for Portland

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 Portland

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