Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant axilflower in Portland should be figured out by looking at the USDA zone info.

Planting Calendar for Axilflower

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

It's probably a bad idea to plant axilflower until after the last frost because they require warm weather.

The earliest that you can plant axilflower in Portland 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 axilflower and expect a good harvest is probably September. If you wait any later than that and your axilflower may not have a chance to fully mature. If you are starting your axilflower 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 February 15 in Portland. In the coldest months of winter you should expect an average low temperature of 25°F.

Keep in mind that USDA zone info for Portland is just an average and the actual date of last frost is different every year. Since half of the time in Portland you get a frost after February 15 be ready to cover your axilflower if you have one of those late frosts.

USDA Zone Info for Portland

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Portland

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