Hi Nick

Thanks for this, I have 2 lemon trees in the conservatory 1 doing extremely well lots of flowers on and some little lemons growing, while the other has some little lemons but looks poorly and keeps dropping leaves and I was wondering why because I water them only when needed and mist them everyday and occasionally wipe the leaves with a mixture of fairy liquid and water which is all things that I have read to do, BUT I have been using tap water so that will be the deposit that is on the leaves, I have rain water in the water butts outside so will switch to using that. Thank you for your info.