The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In London you can estimate when it's possible to plant painted tongues by reviewing the USDA zone info.

Planting Calendar for Painted Tongues

Frost tolerance for painted tongues:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since painted tongues are not cold tolerant you have to wait until after the last frost before you can plant them.

The earliest that you can plant painted tongues 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 painted tongues and expect a good harvest is probably August. You probably don't want to wait any later than that or else your painted tongues may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your painted tongues indoors.

Last Frost Date

On average the last frost has passed is on April 15 in London. It might get as low as -5°F during the coldest months of winter.

Remember that USDA zone info for London is not always accurate and the actual date of last frost is different every year. Half of the time in London you get a frost after April 15 so always be ready to protect your painted tongues if you have a surprise late frost.

USDA Zone Info for London

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 London

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