One of the first steps you take when you are getting a good idea 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.

You should be able to determine when you can plant guara by reviewing the USDA zone info for Portland.

Planting Calendar for Guara

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

Guara are not cold tolerant which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant guara 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 guara and expect a good harvest is probably September. Any later than that and your guara may not have a chance to really do well. You can get started a few weeks earlier by starting your guara indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Portland. You can expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Portland is not always accurate the actual date of last frost will vary from year to year. Half of the time in Portland last frost occurs after February 15 so make sure that you are prepared to cover your guara in the event of a surprise 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.