One of the best tools that you have as gardeners to help us estimate 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.

By looking at the USDA zone info for Kelso you should be able to estimate when it's a good idea to plant bower vine.

Planting Calendar for Bower Vine

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

It's probably a bad idea to plant bower vine until after the last frost because they do not do well in cold weather.

The earliest that you can plant bower vine in Kelso 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. If you wait any later than that and your bower vine may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your bower vine indoors.

Last Frost Date

The average date of last frost is March 15 in Kelso. In the coldest months of winter you should expect an average low temperature of 15°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Kelso and it changes from year to year. Since half of the time in Kelso last frost occurs after March 15 be ready to protect your bower vine if you have a late frost.

USDA Zone Info for Kelso

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 Kelso

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