Normal garden weeds how many mls to a litre of water roundup

Usauly about 15ml / ltr . hope that helps

These are the mixing rates for Roundup GC
when added to:
1 Litre of water in a SPRAYER
5 Litres of water in a WATERING CAN

Annual Weeds:
Chickweed
Speedwell
Annual Meadow Grass
20 ml 20 m2 April - November
Grasses:
Including Couch Grass
30 ml 20 m2 April - November
Perennial and Broad-leaved Weeds:
Bindweed
Dandelion
Docks
Thistle [see below]
30 ml 20 m2
Dandelions and Dock;
April - September
Bindweed and Thistles;
Around the time of flowering
Brush Weeds:
Brambles
Bracken
Nettles
40 ml 20 m2
Brambles, Nettles Scrub:
June - September
Bracken:
July - August
Fully Grown Nettles:
Cut back in early Summer and
treat re-growth in September

These instructions are only for Roundup Gc. There are several roundup products on the market so make sure of the type of round up you have.The strength per litre depends on the weed your trying to eliminate. Take care not to let over-spray hit the leaves you want to keep. You only need to spray the green leaves of the target plant the round up is soaked up by the plant then kills the roots. I put a plastic cut down funnel on the end of my sprayer and cover the offending weed to ensure no accidents. This can take a week to 10 days to see signs of success. If an accident does happen act immediately hose down the plant to wash the chemical so use lots of water. Happy gardening