Planning covers building, not horticulture
This is simply wrong. See section 197 of the Town and Country Planning Act 1990.
Lol. Simply wrong
And what's your expert opinion on the difference between horticulture and arboriculture? And in context of the OP and s197?
Can the removal of PD rights require an application for full planning permission to plant stuff. That's what is being asked. Does the planting of stuff actually come under planning law anyway. What is your view? ie do I need to apply for planning permission (or an LDC) for the daffs and crocuses in my front garden under s197 or elsewhere?
Did you actually read my other comment regarding planting schemes as conditions only.