Book recommendation

[u/ChampionUnfair6336]

Hey all, ive been wondering something.

So I've been self-studying horticulture for around a year, im yet to take a course but based on the past papers ive done I can easily pass the examination. see here's my thing, I have a real interest in the plants. having autism it's taken my whole mind over and I look for the deepest possible understanding I can, was curious what books I ought read to get this deep understanding?​