The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first opportunity to plant lenten rose in Oregon can be figured out by referring to the USDA zone info.

Planting Calendar for Lenten Rose

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

Since lenten rose are one of those plants that can tolerate a little bit of cold weather you can plant them a little earlier in the year than other plants that might not handle the cold.

The earliest that you can plant lenten rose in Oregon 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 lenten rose and expect a good harvest is probably September. Any later than that and your lenten rose may not have a chance to grow to maturity. Starting your lenten rose indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Oregon. You should expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Oregon may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in Oregon last frost occurs after April 15 be ready to cover your lenten rose if you have a surprise late frost.

USDA Zone Info for Oregon

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Oregon

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