Hi guys! I just bought 4 new grocery store phalaenopsis' and they are in full bloom so I am waiting to repot. But a few of them have some dying leaves and if I removed all of the yellowing/partially yellowing leaves a few of the plants would only have 2 leaves left and no signs of new growth. Is this normal as they get to the end of their bloom period? The leaves look weird so I just want to make sure there is no signs of disease so I have attached some pictures.

As an additional question, I will be repotting these orchids once the blooms drop so what is the best potting mix to use for phalaenopsis. I have a prior orchid in a better-gro mix that is pretty coarse and I seem to have to water 2 times a week or so because the coarse mix dries super fast but then I get worried I'm overwatering. Is this the right kind of mix? Should I get something with more sphagnum? What do the pros out there suggest? I'm considering mixing my own since I now own 6 orchids and the pre mixed bags are pretty small and can be pricey.

Thanks for all the advice. I wish I had an orchid expert to go to because I'm never sure if the plants need more water, how to get new leaf growth, when to repot and with what, how I tell if they are healthy, etc

The orchids are dying. We need images showing the entire plants.

There are two possibilities, underwatering or overwatering. I would suspect underwatering in this case. They are just drying up due to little or no water.
In the Orchid Forums we have numerous threads dealing with Phalaenopsis care. It is the most talked about type of orchid. Please search out and read them all. Also read the "sticky" about Starting out with Supermarket Orchids-Phalaenopsis. There is lots of good information there.
If these were mine I would sacrifice the flowers and save the plant by repotting ASAP.

BigBill said:The orchids are dying. We need images showing the entire plants.

There are two possibilities, underwatering or overwatering. I would suspect underwatering in this case. They are just drying up due to little or no water.
In the Orchid Forums we have numerous threads dealing with Phalaenopsis care. It is the most talked about type of orchid. Please search out and read them all. Also read the "sticky" about Starting out with Supermarket Orchids-Phalaenopsis. There is lots of good information there.
If these were mine I would sacrifice the flowers and save the plant by repotting ASAP.

I would agree except all the roots appear to be very healthy. Of course I have not seen the middle of the pot. Sorry it's a little hard to see because I just watered today

Did those dead leaves come off of the plants with the green roots?

Please read all the available info before buying any cheap Orchid...or for that matter, any discount plant. There are stores that will discount just because they are done blooming...then there are those others, who don't discount until death. If you educate yourself, you will know the difference.

BigBill said:Did those dead leaves come off of the plants with the green roots?

Yes all the plants with bad leaves have healthy roots as far as I can tell without unpotting. All of the orchids were on sale so I think it was more end of season than dying. Two of the ones I bought have all good leaves. I am assuming these leaves are dying just because it's time but I wasn't sure because they felt weird and bumpy and the white spots were strange to me.