This message was edited Sunday, May 5th 1:35 AM
Cypress vine has me baffled!
As long as they look healthy I would just leave them alone. Mine done the exact same thing and until I touched them I "thought" they were brown and crunchy....but even though they were brown, they were still fine and healthy! and have taken off and started growing.
make sure you give them plenty of water and you should be fine.