I'll give it a shot. Tho Catts are my least numerous orchid type.
- Will each pb/growth produce a flower? When I have a young plant, can I expect a flower to emerge from each pb/growth?-- No and No. Even when mature, it will produce a sheath only if it has the energy to do so.
- How can I tell if a growth has already produced a flower if there isn't an obvious cut? Many of the plants I have are blooming size and have probably bloomed before. Sometimes you can see where a spike had been. Is there a way to tell if it has bloomed previously if it's not obvious to the eye? What should I look for?-- Yes, look for a remnant of an old, cut spike. If it doesn't produce a sheath when the new growth is fresh, it likely will not.
- In this photo, you can see a little brown dot type thing imbedded in the leaf crevice (front leaf to the right). I see this in many of my Catts. Is that the baby sheath? --- I am not sure, but I have not experienced a growth or sheath from there once it shows like that.
- Funny thing about this plant... when I purchased it, I first thought the sheath was a bud (from the online photo). Then when it arrived, I thought it was some kind of third leaf and was terribly disappointed that I would have to wait for it to bloom! Finally, I realized that it's actually a sheath, which is great, but it seems to be taking FOREVER! How long does it take to form the flower? The sheath has been present for at least a month, probably longer. --- It is an indeterminate length of time. If you hold it up to the light do you see anything inside the sheath? Sometimes they come up empty and don't flower.
Also, is this a good size to divide?--- Personally, I want to grow large, specimen types orchids. So dividing is a personal choice. You will have more orchids to care for if you divide and keep the division.
- What does it signify when a pb starts to develop the papery sheath, as seen in the photo below. --- Not sure but I believe a sheath, paper or not, can fill and bloom at a later date if it stays intact.
If others have different answers, I am always looking to hear others views.