The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant bower vine in Zone 9a should be estimated by looking at 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 need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant bower vine in Zone 9a 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 bower vine and expect a good harvest is probably September. Any later than that and your bower vine may not have a chance to fully mature. Starting your bower vine indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Zone 9a. You can expect an average low temperature of 20°F in the coldest months of winter.

Remember that USDA zone info for Zone 9a is just an average and the actual date of last frost will vary from year to year. Since half of the time in Zone 9a there is a last frost after February 15 be ready to cover your bower vine if you have one of those late frosts.

USDA Zone Info for Zone 9a

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°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 25°F.

Plants to Grow in Zone 9a

You may be interested in your other planting guides for Zone 9a.