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.

You should be able to determine when it's the best time to plant alyssum by looking at the USDA zone info for Bluffton.

Planting Calendar for Alyssum

Frost tolerance for alyssum:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Alyssum are very cold tolerant which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant alyssum in Bluffton 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 alyssum and expect a good harvest is probably September. Any later than that and your alyssum may not have a chance to grow to maturity. Starting your alyssum indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bluffton. In the coldest months of winter you can expect an average low temperature of -10°F.

It's important to remember that USDA zone info for Bluffton is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Bluffton you get a frost after April 15 so be sure to be ready to protect your alyssum in the event of a surprise late frost.

USDA Zone Info for Bluffton

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Bluffton

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