Phal with partial yellowing Leaves

[littleflower]

Help! I’ve had this orchid for three years, water once a week, location the same

[Swimmingorchids]

that is most likely an issue with the roots. If you haven't got any fresh orchid bark mix - go get some.

Then inspect the roots. Helps to let them dry out a day then re-wet them to see the condition of the roots. Anything rotting needs to be cut away. Then repot.

[SouthPark]

Originally Posted by littleflower

Help! I’ve had this orchid for three years, water once a week, location the same.

The spot it is growing in right now might be ok. But then, it might not be ok. Has it got good air circulation?

Also - it will be beneficial to explain the watering --- as 'once a week' doesn't describe how much water you use, and how the water is applied, and what growing media is being used (bark, etc.). Should even mention what sort of pot is being used, and if the pot has very good drainage holes.

And also, might need to say whether apply fertiliser and/or calcium-magnesium every once in a while...... and how much etc.

[littleflower]

Thank you, I will check the roots and put some fresh bark. Are use orchid for Lizer, generally fill it with water, let it soak for seven minutes then allow to completely drain

[Mountaineer370]

Originally Posted by littleflower

Thank you, I will check the roots and put some fresh bark. Are use orchid for Lizer, generally fill it with water, let it soak for seven minutes then allow to completely drain

I'm sorry, but there seems to be a transcription error with the part I bold-faced. I think perhaps you meant to say, "I use orchid fertilizer"??? If so, are you saying you fertilize each and every time you water (once a week)? It would be helpful to know what fertilizer you are using and at what strength, i.e., the manufacturer's recommended dosage or something less.

Also, for some reason, I am unable to enlarge your photo, and I cannot tell what kind of pot it is in or what exactly the medium is. You mentioned bark, but is it in just bark, or a mixture, or what? What kind of bark? When was the last time it was repotted, meaning taken out of its pot, the roots examined, and the entire potting media replaced with new?

[aliceinwl]

If you haven’t repotted, I agree it’s probably over due. But, it would also be good to carefully inspect the bases of the yellowing leaves. It’s really easy to accidentally get some water in there and have some rot get started.

If it does look like rot: brown or black discoloration at the base of the affected leaves, I’ve had good luck surgically applying hydrogen peroxide into the leaf axels (dripping in a few drops, not hosing down the plant), letting it bubble, using a tissue to soak up any remaining moisture, and then sprinkling cinnamon into the axels.

Plants seem more prone to develop these roots when stressed: unhappy roots, below optimum temperatures, poor air circulation etc.

[rbarata]

The main symptom (the most frequent) I see that could indicate root issues is the look of the leaves...wrinkled.
It means not enough water due to: watering not enough or a bad/innefective root system (which means damaged/rot/dead roots).
Repor with fresh bark, before you put it into new medium, cut the dead roots (mushy and brown) with a sterilized cutting tool and don't do nothing to the good roots.

[SouthPark]

Originally Posted by littleflower

Are use orchid for Lizer, generally fill it with water, let it soak for seven minutes then allow to completely drain

Could you please check the wording above and update the wording?

After you do your watering - get some of your bark from inside your bark mix (inside the pot) and inspect the bark to see if they have absorbed water. I'm thinking that your bark will probably be ok, as you only water your plant each week.

Once a week might be too little. Although, you did mention that you had this plant for three years.

It's unclear whether you use fertiliser and/or calcium/magnesium supplements for this orchid. And unclear about what concentrations you had been using.

If no supplements have ever been used, then it could also be a case of nutrient deficiency ----- kind of like humans not getting vitamin D, or vitamin C or iodine ----- ie. run into trouble or even not make it after a while.

In this case, the leaves are definitely not getting enough water into them. So, as the members already suggested - check the bark, and check the roots to see if they're ok. If the roots appear to be ok, not rotted, not mushy etc, then it will be necessary to do more watering.

A repot of bark may be beneficial too. And ---- if you do use new bark, it will be beneficial to soak the new bark in water for a while (eg. an hour) - to get water into that new bark. Do that before repotting. Dry bark (if it is dry) is good at repelling water.