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.

You should be able to estimate when to plant salvia by reviewing the USDA zone info for Louisville.

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.

You can plant salvia a bit earlier in the year because they do ok in moderate cold.

The earliest that you can plant salvia in Louisville 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 salvia and expect a good harvest is probably August. Any later than that and your salvia may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your salvia indoors.

Last Frost Date

The average date of last frost is April 15 in Louisville. You can expect an average low temperature of 0°F in the coldest months of winter.

Remember that USDA zone info for Louisville is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Louisville last frost occurs after April 15 be ready to cover your salvia in the event of one of those late frosts.

USDA Zone Info for Louisville

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Louisville

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