One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of figuring out when it's the best time to plant swan river daisy is to consult the USDA zone info for Ashtabula.

Planting Calendar for Swan River Daisy

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

Since swan river daisy require warm weather it is necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant swan river daisy in Ashtabula 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 grow to maturity. If you are starting your swan river daisy indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Ashtabula. It might get as low as -5°F during the coldest months of winter.

Keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Ashtabula and it changes from year to year. Half of the time in Ashtabula last frost occurs after April 15 so make sure that you are prepared to protect your swan river daisy in the event of a surprise late frost.

USDA Zone Info for Ashtabula

Here is the info for USDA Zone 6b.

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

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

Plants to Grow in Ashtabula

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