Thomas and Kenneth,
Yes, air layers are possible on the bald cypress...I have made several in the past and currently have another one going in my garden...they are not always successful but after I learned the correct proceedure I have had about 80% success...You should start the layer in the spring after the new leaves harden off...The best method I have found involves the tourniquet method...I usually make a few small nicks all the way around the trunk just above the wire...after about 2 months I usually remove the wrapping and moss...You will see a large swelling just above the wire...then make some cuts between the nicks about 1/2 inch long re-apply the rooting hormone, moss and wrap...by this time here in San Antonio the afternoon temps are so high it is a good idea to also wrap aluminium foil around the layer to refelect some of the heat...usually if I see enough roots by the end of September I will remove the layer...but if not I wait until the following early spring before bud break...this also gives you time to make the chop where you want it...I have some pics of the layer I did this past spring and will post them on the forum IF I am successful...
Regards
Behr
