Dormant roots?

[greenpassion]

The majority of my phals have nice green tipped growing air roots, but I also have several phals that have a combination of actively growing air roots and dormant air roots. Inside the pot they are all actively growing. Is this normal? My humidity levels are kept at around 50% now that I have 2 humidifiers going.

[Manu]

Nothing really to worry about, normally that's due to low humidity or not watering the aerial roots often enough. It they get and stay dry too long they stop growing. If you spray the aerial roots daily it would probably prevent that. My only Phal that does that is my last hybrid, Phal SogonYukidian, it's also the only one that doesn't get a daily misting of it's aerial roots (it's too large to handle all the time).I also have some phals that stop growing a root due to damage of the active tip and restarts on the same tip shortly after.

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[greenpassion]

Good to know. I'll start misting the roots! Another question. If I leave them in place, and mist the roots, it'll likely leave residue. Can I mist them with RO water to avoid that?

---------- Post added at 10:10 PM ---------- Previous post was at 10:06 PM ----------

Residue on the surface they are sitting on.

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[Manu]

Tap water shouldn't cause much residue, unless you're on well? I use the same mix everytime all time with low fertilizer, I don't notice any residue and water my plants almost daily strictly by heavy mistings, works well with mounted plants, with pots I'd be careful not to over do it and to be careful not to soak the media in the pot, the idea is just to get water to those aerial roots so they don't dry up. Yes you could use RO water. Don't overthing it too much!!

[estación seca]

It's not a big deal if the air roots don't grow continuously. They will resume growing in suitable conditions. A lot of people in cold-winter climates have Phals that don't grow much during the winter, and that's OK.

[greenpassion]

Well that's reassuring ES. And yes I do have well water, and it doesn't really leave a residue so much as sort of spots.

[Ray]

If you have RO water, definitely use that, containing a minuscule amount of fertilizer (~ 25 ppm N is my recommendation) for all watering and root misting.

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[greenpassion]

Will do .😊