Looking for a broad leaf weedkiller which is safe to use around (very close to) young hebes. Does this exist? weeds are bittercress, groundsel, and tall willow herb
Eco-Organic Garden Concentrate Slasher Organic Weedkiller would be a suitable product for that application. It's an organic product which is safe to use around other plants as it leaves no lasting residue in the soil.
Unfortunately, your Hebes won't be particularly happy if it comes in contact with them. I'd advise using a large piece of cardboard positioned as a barrier in between the weeds and you Hebes when spraying. You should also spray when there isn't a significant breeze. Alternatively, you can apply the product with a Yates Zero Weeding Herbicide Applicator Brush.
You should find this step-by-step tutorial helpful: How to control weeds organically.
You might also be interested in reading through these other discussions:
Please let me know if you need further assistance or had other questions.
Thank you, I hadn't considered using using an applicator, that looks very handy. On a similar note, is there a safe herbicide for weeds which are in amongst dense ferns? creeping oxalis, liverwort and broad leaved fleabane? I read that triclopyr for oxalis wont kill bracken fern, but these are blechnums.