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Author Topic: A question for the "wise ones"  (Read 191 times)
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Hero Member
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Gender: Male
Australia Australia

Hobbies: I belong to the Illawarra Bromeliad Society as well as the Illawarra Light Railway Museum Society and we restore and operate old 2' gauge steam and diesel locomotives and associated rolling stock
Posts: 1384

« on: March 10, 2016, 20:36:04 »

Hi everyone.

We know that bromeliads will be damaged if they make contact with copper e.g. plants tied on to mounts with non-insulated copper wire will quickly die; plants sprayed with a copper based fungicide will die; plants that have water dripping on them from an overhead copper pipe will often suffer damage and rot, and plants with water dripping on them from wet overhead CCA treated unpainted timber will rot due the copper leeching from the wet timber.

Why is it then that plants irrigated with water supplied through normal domestic copper pipes (used in most homes) doesn’t cause them any damage? Does something occur in the final supply through the plastic hose or watering can to neutralize the effects of the copper?

All the best, Nev.
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« Reply #1 on: March 11, 2016, 01:18:58 »

Hi Nev, just replied to this on FB. It is a fact that a lot of the older residential water pipe systems are either copper or galvanised. Now days most houses use a plastic system for hot & cold but still you need a length of copper in New Zealand for your hot water cylinder.
The metal form of copper oxidises at a much slower rate as the 'chemical form' as compared to what you find in copper based fert which is more concentrated however eventually from any copper pipe/source the copper amount can effect your broms Nev. Broms will survive a while as the water pipe will contain a very low amount but only till the copper builds up, this maybe the life time of the average brom. Best to use rain water if at all poss.

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