rlist
Shohin
Through some good luck several bald cypress trees made it into several gardens in the NW this year - specifically the Portland area, Zone 8a. Oregon Bonsai has been growing pond cypress in the field for about 8 years now with success - even in an area that gets zero direct sunlight for several months each winter and snow/ice will stay on the ground for weeks (right Brent?).
So, I know that they will survive in the ground, but I am concerned about trees in pots. In our climate we will rarely if ever get below 25 degrees F, but I would not be surprise if we have two-three instances of a week or more where we will stay below freezing with trees and pots frozen solid.
In my case, my winter protection is to put all the pots next to each other on the ground, and only take precautions if it is going to get below the 25 degrees F or when freezing rain is coming. Last year I did nothing, other then move a couple during a wind storm. With a mostly NW native collection, no real problems have surfaced in our winter care (i.e. Jason doesn't even remove trees from benches and has no problems).
Now, with some of the above mentioned pond cypress' in mortar tubs and some bald cypress' in pots, do we need to take additional precaution to protect the roots of these trees? I believe we do. One local places his bald cypress, pot and all, into a slow moving stream section of his pond that doesn't freeze. I was thinking something like mulching them in place with 4" of bark mulch surrounding the pot. I was hoping some northern climate Nutters with experience could chime in and give some direction.
Thanx!
So, I know that they will survive in the ground, but I am concerned about trees in pots. In our climate we will rarely if ever get below 25 degrees F, but I would not be surprise if we have two-three instances of a week or more where we will stay below freezing with trees and pots frozen solid.
In my case, my winter protection is to put all the pots next to each other on the ground, and only take precautions if it is going to get below the 25 degrees F or when freezing rain is coming. Last year I did nothing, other then move a couple during a wind storm. With a mostly NW native collection, no real problems have surfaced in our winter care (i.e. Jason doesn't even remove trees from benches and has no problems).
Now, with some of the above mentioned pond cypress' in mortar tubs and some bald cypress' in pots, do we need to take additional precaution to protect the roots of these trees? I believe we do. One local places his bald cypress, pot and all, into a slow moving stream section of his pond that doesn't freeze. I was thinking something like mulching them in place with 4" of bark mulch surrounding the pot. I was hoping some northern climate Nutters with experience could chime in and give some direction.
Thanx!