Can plants encourage each other?

[Leafmite]

When reading about herbs (very old books), I read that people planted certain plants (one is Yarrow) to help encourage the growth of other plants. Some study (no idea where I found this or whether it was peer reviewed) looked at the growing of seedlings and determined that in some circumstances, they would encourage or discourage growth, depending on whether the seeds had the same parents or not.
Something to contemplate, at least....

[Dante1709]

Originally Posted by Leafmite

When reading about herbs (very old books), I read that people planted certain plants (one is Yarrow) to help encourage the growth of other plants. Some study (no idea where I found this or whether it was peer reviewed) looked at the growing of seedlings and determined that in some circumstances, they would encourage or discourage growth, depending on whether the seeds had the same parents or not.
Something to contemplate, at least....

I've heard of yarrow as well. I actually used to be a bit crazy about yarrow and whenever I see it now, nostalgia takes over.