One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

The first opportunity to plant bower vine in Lake Oswego should be determined by using the USDA zone info.

Planting Calendar for Bower Vine

Frost tolerance for bower vine:	Not tolerant of frost.
When to plant:	After the last frost.

Since bower vine do not do well in cold weather you have to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant bower vine in Lake Oswego 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 bower vine and expect a good harvest is probably August. You probably don't want to wait any later than that or else your bower vine may not have a chance to really do well. You can get started a few weeks earlier by starting your bower vine indoors.

Last Frost Date

On average all chance of frost has passed is on March 15 in Lake Oswego. It might get as low as 15°F during the coldest months of winter.

Always keep in mind 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 Lake Oswego and it will vary from year to year. Since half of the time in Lake Oswego you get a frost after March 15 be ready to cover your bower vine in the event of a surprise late frost.

USDA Zone Info for Lake Oswego

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 Lake Oswego

You may be interested in your other planting guides for Lake Oswego.