One of the first steps you take when you are figuring out 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.

In Portland you can estimate when you can plant dahlberg daisy by referring to the USDA zone info.

Planting Calendar for Dahlberg Daisy

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

It's not a good idea to plant dahlberg daisy until after the last frost has passed because they require warm weather.

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

Last Frost Date

On average all chance of 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 is just an average and the actual date of last frost will vary from year to year. Since half of the time in Portland there is a last frost after March 15 be ready to protect your dahlberg daisy 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.