One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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 determine when it's the best time to plant anise by checking out the USDA zone info.

Planting Calendar for Anise

Frost tolerance for anise:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Anise are barely cold tolerant which tells us that you can plant them slightly earlier than other frost tender plants.

The earliest that you can plant anise in Portland 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 anise and expect a good harvest is probably September. Any later than that and your anise may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your anise indoors.

Last Frost Date

The average date of last frost is February 15 in Portland. It might get as low as 25°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Portland and it is different every year. Since half of the time in Portland last frost occurs after February 15 be ready to protect your anise if you have a late frost.

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.