Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to figure out when it's possible to plant swan river daisy by looking at the USDA zone info for Irmo.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's not a good idea to plant swan river daisy until after the last frost because they are not cold tolerant.

The earliest that you can plant swan river daisy in Irmo is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant swan river daisy and expect a good harvest is probably August. Any later than that and your swan river daisy may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your swan river daisy indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Irmo. You should expect an average low temperature of 10°F in the coldest months of winter.

Since the USDA zone info for Irmo is an average the actual date of last frost is different every year. Half of the time in Irmo it frosts late in the year after March 15 so be sure to be ready to protect your swan river daisy in the event of a surprise late frost.

USDA Zone Info for Irmo

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Irmo

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