Growing trees and planting in the woods.

I've been growing horse chestnut trees for a few years. There is an abundance of their seed on the street where I live, and surrounding area.
I've always previously ignored the self-setting Beach & Ash until recently. But this year I started potting them up-especially the Beach due to their abundance.
I did not really want anything competing with or impeding the growth of the horse chestnuts (my passion) once they are in the woods.
However, it ocurred to me that having other species around may actually compliment the growth of the HCs? I'm just thinking about the benefit from the other species that may attract certain polinating insects to the area that otherwise might not be there?
I welcome your ideas/thoughts.
I've always previously ignored the self-setting Beach & Ash until recently. But this year I started potting them up-especially the Beach due to their abundance.
I did not really want anything competing with or impeding the growth of the horse chestnuts (my passion) once they are in the woods.
However, it ocurred to me that having other species around may actually compliment the growth of the HCs? I'm just thinking about the benefit from the other species that may attract certain polinating insects to the area that otherwise might not be there?
I welcome your ideas/thoughts.
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The way to save the planet is not to use fossil fuels.
https://medium.com/the-philipendium/trees-and-carbon-dioxide-what-is-the-truth-c7f8c9d12602
In their native habitat they grow in woodlands, but more mountainous woodlands that are not as dense as lowland woodlands. They are now naturalised in the UK.
Find an estate owner who has a driveway that could benefits from a double row of horse chestnuts!
(and yes I can identify most trees, even when not in leaf)
If it ain't your land - you cant plant 'em.