One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of estimating when it's the best time to plant swan river daisy is to use the USDA zone info for London.

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 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 London 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 really do well. You can get started a little bit earlier by starting your swan river daisy indoors.

Last Frost Date

On average the last frost has passed is on April 15 in London. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for London may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in London you get a frost after April 15 be ready to cover your swan river daisy in the event of a late frost.

USDA Zone Info for London

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 London

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