How Does Comfrey Spread

Does Comfrey Spread? … Our comfrey does not produce viable seed and stays in place. It will only spread if disturbed because any piece of comfrey root will make a new plant. So any digging or rototilling near comfrey will result in new plants.

How is comfrey invasive?

Most comfrey plants can be somewhat invasive spreading via seed, to parts of the garden where they are not wanted. ‘Bocking 14’ will flower and provide nectar and pollen but will not produce viable seed. The first flowers of spring.

How fast does comfrey spread?

Strong, mature plants on a 3 foot grid will have the larger outside leaves touching the adjacent plants after 4 to 5 weeks growth. Comfrey can also be grown indoors, in pots (1 to 5 gallon size) for a continuous harvest of fresh, small leaves.