The USDA Zone info is a great tool for gardeners to help us estimate 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.

You will be able to estimate when it's a good idea to plant salvia by looking at the USDA zone info for Inverness.

Planting Calendar for Salvia

Frost tolerance for salvia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Salvia are barely cold tolerant which means that you can get them planted just a bit earlier than other plants that might not handle the cold.

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

Last Frost Date

The average date of last frost is February 15 in Inverness. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Inverness is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Inverness it frosts late in the year after February 15 so make sure that you are prepared to cover your salvia if you have a surprise late frost.

USDA Zone Info for Inverness

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 Inverness

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