Question
I bought a couple at a plant show recently and assumed they would have to remain in their pots.  But a neighbor plunked a couple in the ground and seemed to have done well. I have a couple redwoods where I thought I could plant them under for filtered sun and protection from the cold.  What do you think?  Keep them in the pots or try a direct planting in the soil...and any suggestions for soil amendments if I do put in the ground...Thanks,  Jack

Answer
Hello Jack,

First, I'd like to apologize for taking so long to respond to your question.  Had some computer problems that I finally got resolved - I hope!

Cymbidiums can be grown in the ground but usually do better in pots.  Long ago (60+ years ago), some orchid nurseries grew cymbidiums in the ground and when sold had to be dug up.  Now, all cymbidiums are grown in pots with various potting materials, making it much easier for anyone buying one to take with them.  

If you decide to plant them in the ground, the location you mentioned should be fine.  The primary consideration is how much sunlight they would get in summer.  In N. California you probably want them to be exposed to about 70% sun.  As for soil amendments, you can try digging a hole, place the cyms in then fill around it with some orchid potting medium.  The main thing is that it be able to retain some moisture while still allowing for some air space.  

Gauging how much to water could be a little difficult in the ground because it is difficult to know how wet or dry it is.  Cyms should be allowed to become almost dry between waterings.  

Hope this helps.  Good luck and good growing.  Again, I apologize for being so tardy.

Jim Kawasaki
San Jose, Ca.