Would this "indicator plant" question be on topic?

Question

While doing gold panning in the outdoors, how is it possible to use indicator plants to assist me with finding gold along water courses?

A simple definition of an indicator plant can be found here.

In particular I would like to know how I could possibly use horsetail to assist those doing gold panning?

Horsetail is used as an indicator for wet and poor drained sites and is often found in sandy soils.

Some sites claim that horsetail can and has been used as an indicator plant to aid one in finding gold!

My question is this: How can one know the differences between what makes a site possibly gold bearing over one that is simply wet, poorly drained and/or sandy, while using horsetail as an indicator plant?

Note: I will put in better sources (I hope) in an actual question on main, if this question is deemed on topic.

Answer 1

That feels very much on topic - sure, it is also likely to be on topic over on gardening, but as indicator plants are the sort of thing you will see while outdoors, let's have it here.

Answer 2

I say post it, looks good to me.