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Sep 3, 2022 8:47 PM CST
Name: Big Bill
Livonia Michigan (Zone 6a)
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Yes I get that. But are you aware of the chemical breakdown of distilled water? I don't use it so I don't have any idea. Perhaps next to nothing. I have no idea.

But I can tell you that most orchids need a little nutritional boost from time to time. I use 20-20-20 Jacks all purpose. If you are using nothing but distilled water, that could be why you are seeing bulbs go orange.
Nitrogen, Phosphorous, Potassium, Calcium, Magnesium, and then with trace elements, your plants might be happier.
When your Miltoniopsis bloom, how big are the flowers and how many are there on each spike? This would be useful to know.
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Last edited by BigBill Sep 3, 2022 8:48 PM Icon for preview
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Sep 4, 2022 5:22 AM CST
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Name: Joshua
Melbourne, Victoria, Australia (Zone 10a)
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Distilled water should be as close to pure H20 as you can get. It won't contain minerals or other nutrients.
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Sep 4, 2022 6:44 AM CST
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Name: Ursula
Fair Lawn NJ, zone 7a
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Australis said: Distilled water should be as close to pure H20 as you can get. It won't contain minerals or other nutrients.


And, my early Orchid training ground was this tall window wall, all along our research labs. I spent years watering at lunch time. All labs had one faucet dedicated to distilled water and I never used it to water the Orchids. I got my training from my Chemist boss!! Better use rain water if your city water is too hard, and do fertilize your plants.
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Last edited by Ursula Sep 4, 2022 5:32 PM Icon for preview
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Sep 4, 2022 7:50 AM CST
Name: Alice
Flat Rock, NC (Zone 7a)
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OK all you scientists out there. The water in FL is hard and we have a water softener to bring the pH to neutral but, of course, it uses salts to do that. We drink RO water and take suppliments to make up for the natural minerals it lacks. I don't really have any good options for collecting rainwater.
So, I know the softened water is not good but what about the RO? Should I be adding specific fertilizers to make up for the minerals it is missing?
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Sep 4, 2022 7:54 AM CST
Name: Big Bill
Livonia Michigan (Zone 6a)
If you need to relax, grow plants!!
Bee Lover Lover of wildlife (Raccoon badge) Orchids Region: Michigan Hostas Growing under artificial light
Echinacea Critters Allowed Cat Lover Butterflies Birds Region: United States of America
They do make a special fertilizer just for Florida's situation. I just do not remember what it was off hand.
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.
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Sep 4, 2022 8:03 AM CST
Moderator
Name: Ursula
Fair Lawn NJ, zone 7a
Orchids Plumerias Cactus and Succulents Region: New Jersey Region: Pennsylvania Native Plants and Wildflowers
Greenhouse Ponds Keeper of Koi Forum moderator Lover of wildlife (Black bear badge) Adeniums
Yes, I would think the RO is too pure for plants and I would add some specific minerals back in.

Btw I seem to remember that Kathy Puckett/Boojum had an RO system installed at her previous place. She might be able to tell you exactly what she added in.
Last edited by Ursula Sep 4, 2022 8:17 AM Icon for preview

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