One of the best tools that you have as gardeners to help us figure out 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.

By using the USDA zone info for Zone 3b it's a good idea to figure out when it's the best time to plant swan river daisy.

Planting Calendar for Swan River Daisy

Frost tolerance for swan river daisy:	Not tolerant of frost.
When to plant:	After the last frost.

Since swan river daisy are not cold tolerant you have to wait until after the last frost has passed before you can plant them.

The earliest that you can plant swan river daisy in Zone 3b is May. However, you really should wait until June 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. Starting your swan river daisy indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Zone 3b. It might get as low as -35°F during the coldest months of winter.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Zone 3b and it can change quite a bit from year to year. Since half of the time in Zone 3b it frosts late in the year after May 15 be ready to cover your swan river daisy if you have one of those late frosts.

USDA Zone Info for Zone 3b

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Zone 3b

You may be interested in your other planting guides for Zone 3b.