What Is This Plant?

Question

I have been trying to clear this from the cracks in my block paving. It has survived boiling water, weed killer and being removed with a blade. Please can you help.

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Answer 1

This is a group of plants known as "liverworts" This particular one belongs to the genus, Marchantia. They are very difficult to control.

The best way to deal with this will be solarization. This article will help:

https://www.gardeningknowhow.com/garden-how-to/projects/how-to-solarize-garden-beds-to-eliminate-garden-pests-in-the-soil.htm

Here is an article that will give you more information about liverworts:

https://www.gardeningknowhow.com/ornamental/water-plants/liverworts/liverwort-information.htm