Dahlias In Beds Have Survived

I never expected to be able to show you this - a new shoot springing from a dahlia overwintered in a flower bed - not after the winter we have just had. I did not cover the plants. They were left untouched in the beds about 10 to 15 cms (4 to 5 inches) deep. Amazing. Dahlias definitely do seem much more frost tolerant than we think - unless I just have some frost-tolerant varieties.