Posted: 20/04/2015 at 08:21
Kill it before it spreads! Oh...it HAS spread! I've been killing this thug in the same garden for a quarter of a century. Mind you, it's a biggish garden surrounded by farmer's fields and roadside verges and a riverbank, none of which belong to me, so it creeps in from the margins of those and nothing I can do about it.
I've used glyphosate, and still do; I've hand weeded out those long roots by hand; I've smothered it under carpet and weed suppressant; I've done everything. Glyphosate works really well if you just have a patch of ground elder by itself, with nothing you want to keep nearby, but once it's growing and spreading in hedge bottoms, in lawns, under and around trees and shrubs it's more of an issue, as glyphosate is a systemic weedkiller - it'll kill ANYTHING it touches. It doesn't discriminate between a weed and your favourite plants! Be careful!
There's a gel form which comes in a small container, looks a bit like a deodorant stick, which you apply to individual leaves, but if you have a LOT of ground elder you'd be on your hands and knees forever ( cursing, not praying! )
You can try tying bin-liners or some similar protection over any plants you want to keep and spraying the GE around them and remove the bags once the glyphosate has dried. It needs to be applied in dry weather and if it rains within six hours of application you can forget it - it will have diluted and you'll have to apply it again. Keep an eye on the local weather forecast, there's no point wasting your time or money - glyphosate is expensive!
Keep pets inside until it's dried on the leaves.