Sometimes we want to just kill that weed, but don't want to use an inorganic weedkiller. Well Eco has produced a Certified Organic Weedkiller that may be of interest.
exert from ECO Club News December 2016
Slasher Weedkiller is very versatile and will control a broad range of weeds as well as moss, algae and lichen. You can spray it anywhere around the house and garden for effective organic control. It works on contact and rapidly burns and desiccates plants so you’ll see results within a few hours.
Slasher Weedkiller is made from plant oils which have been turned into a substance called nonanoic acid. Nonanoic acid is also known as pelargonic acid and occurs naturally in plants (including pelgaroniums which explains the alternative name).
While Slasher Weedkiller is a powerful herbicide it is still incredibly safe for the environment – it rapidly breakdowns in soils and is completely gone within a few days. Slasher Weedkiller contains no glyphosate and is Registered Organic and approved for use in organic gardens and farms.
Slasher Weedkiller is making its way into stores which always takes time but you can speed things up by asking for it in your local store. We also have it available now from our online shop. If you’re after large quantities these are available from our commercial division.
Vinegar straight from the bottle does a darned good job, too. Spray it on during the heat of the day it works even better. Make sure to rinse out the spray-bottle before you store it away.
This stuff they are selling might be OK too. Bet it's dearer than el cheepo Vinegar. Don't be sucked in to any 'organic weedkiller' which contains Acetic Acid and Sodium Chloride: these are the chemical names for Vinegar and common or table Salt. The Vinegar by itself works well, no need for salt.
I've seen the commercial vinegar ones, but I have not seen this version of acid before. It turns out that it's an extract of geranium (amongst others). I have not found a diy instruction for extracting the pelargonic acid from the plant.