I'd be careful, if I were you... this last week, I've had an incidence of boys playing football behind my house and claiming that their ball was in our garden (it's not...). They then tried climbing over our fence (which my dog - and I - took exception to), and I explained to them that (a) their ball is not in my garden, at all, I've looked, and (b) if they kick a ball and think it's on my property, to knock and I will always throw it back if it is... to which they decided to boot half my fence down a full hour later.
They're all younger than my 11 year old DS.
And their parents - because yes: I marched up the road to the parents - were even less impressed than I was about their behaviour, and they're paying for two new fence panels, without question, when I explained that holes in my fence, may equal my not-child-friendly dog chomping on "ooh, a hole...!!!" friendly toddlers fingers.
But I know that my case is unusual. And if I'd not watched them boot down the fence myself (and possibly if I didn't have a reputation in our street for not taking advantage, and having previously said to the same parents that I had told their boys off for climbing on my rickety fence, because I didn't want them to hurt themselves when/if it collapsed underneath them!). And I don't. At all.
I would, however, like to know where their football has vanished off to, if it's not in my garden... because the thought of a magic portal isn't exactly one that's filling me with joy.
Although, I do know that any damage to plants is considered criminal damage - as is damage to fences - so maybe you could use that as a bargaining chip with the parents (I didn't have to: luckily!).