Posted: 27/08/2013 at 11:28
Mmmmm. Not so sure of using rhubarb leaves this way. Just because they are natural doesn't mean they are safe. They contain oxalic acid. You would have to eat a LOT of leaves for it to kill you but making a decoction of them is making the poison more concentrated. Not surprised it kills the aphids and probably anything else good or bad that lands where you have sprayed. Personally I would not like to eat anything sprayed with this.