One of the first steps you take when you are making a decision about 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.

By looking at the USDA zone info for Corvallis you should be able to estimate when you can plant lunaria.

Planting Calendar for Lunaria

Frost tolerance for lunaria:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since lunaria are moderately cold tolerant you can plant them just a bit earlier in the year than other frost tender plants.

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

Last Frost Date

In Corvallis the average date of last frost happens on March 15. You can expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Corvallis is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Corvallis there is a last frost after March 15 be ready to cover your lunaria if you have one of those late frosts.

USDA Zone Info for Corvallis

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 Corvallis

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