I used a string to keep it straight and a level for the top but I'm still learning. This is my fourth path and it does seem each one is better. Just trial and error
Well yes, the reason it interested me was that lichen is one thing but it is also two things - a fungus and an algae, neither one can live without the other so they are an example of a symbiont - a life form that comprises two distinct but combined species. Each supplies vital nutrients to the other in order to survive.
Its the stuff of science fiction* all around us
In fact there are a whole plethora of varieties, Im talking your “garden variety” in Britain, the leafy looking types were what I looked at, with a lux meter somewhere in a welsh valley.
Unfortunately they are exceedingly slow growing, so imo they are something to enjoy when youve found them.
*Literally the concept is covered in the episode released in Star Trek last week. So much of sci fi comes from gardening, I have found(!)
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Its the stuff of science fiction* all around us