The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when it's possible to plant swan river daisy is to check out the USDA zone info for Gaithersburg.

Planting Calendar for Swan River Daisy

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

You can not plant swan river daisy until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant swan river daisy in Gaithersburg 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. You probably don't want to wait any later than that or else your swan river daisy may not have a chance to fully mature. If you are starting your swan river daisy indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Gaithersburg. In the coldest months of winter you should expect an average low temperature of 0°F.

Since the USDA zone info for Gaithersburg is not always accurate the actual date of last frost will vary from year to year. Half of the time in Gaithersburg it frosts late in the year after April 15 so always be ready to protect your swan river daisy if you have a late frost.

USDA Zone Info for Gaithersburg

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 Gaithersburg

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