Old cattleya collection haven't bloomed for over 40 years

[Paphluvr]

Are they grown in pots? When was the last time they were put into fresh media?

[Jeremy T]

Originally Posted by Paphluvr

Are they grown in pots? When was the last time they were put into fresh media?

In same clay pots with same original big chunks of charcoals and broken pieces of clay pots as media.

---------- Post added at 04:47 PM ---------- Previous post was at 04:37 PM ----------

Originally Posted by Orchidtinkerer

like DC I agree, some decication to keep them around for 40 years without blooms.

Ray has given excellent advice.

I will also add possible reasons being that they could have picked up a virus which would make them weaker,
they could have hidden pests feeding on them, after 40 years outdoors with no winters that is a high probability imo and that can inhibit flowering too.

Thanks. Sounds like I will help her repot all the old cattleya when I can finally visit her.

---------- Post added at 04:56 PM ---------- Previous post was at 04:47 PM ----------

Originally Posted by DirtyCoconuts

What dedication

Just for reference my Catt species put 5-15 growths in a year with at least two seasons. I am more temperate than she is. There is something missing for their happiness.
I agree. Determine the food supply and then adjust the light gradually for an experiment

Wow that's lot of growth. Will discuss a plan with my mom to for the best way to introduce changes to these cattleyas. It has been over 40 yrs, so, there is no harm trying.
Fingers cross and thank you.