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

The USDA zone info for Vacaville can be read to estimate when it's the best time to plant balsam.

Planting Calendar for Balsam

Frost tolerance for balsam:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since balsam require warm weather you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant balsam in Vacaville 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 balsam and expect a good harvest is probably September. If you wait any later than that and your balsam may not have a chance to really do well. You can get started a few weeks earlier by starting your balsam indoors.

Last Frost Date

The average date of last frost is February 15 in Vacaville. In the coldest months of winter you can expect an average low temperature of 25°F.

Always keep in mind that USDA zone info for Vacaville is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Vacaville it frosts late in the year after February 15 be ready to cover your balsam if you have a surprise late frost.

USDA Zone Info for Vacaville

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Vacaville

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