Author Topic: Basic Air Layer Question  (Read 3795 times)

sdonny

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Re: Basic Air Layer Question
« Reply #15 on: September 18, 2013, 11:55 AM »
I also live in a cold climate (New Hampshire).  When the buds were coming out in April, I attempted six air layers on full grown rhododendrons in my yard for future bonsai stock.  When I checked the air layers in mid-July hoping to plant, I had very little roots developing so I wrapped them back up and let them keep going.  When I checked recently this mid-September, I had more roots but not the mass of roots some of you suggest ideally should be seen through the plastic.  My question is since I live in a cold climate and have air layered mature landscape trees that I cannot easily shelter inside, is my best option to chop these air layers and plant now in the ground with minimal roots?  Also, If I chop and plant in the ground now, should I remove any branches or leaves/half leaves?  Can I let these air layers go another half growing season as some of you have suggested and am wondering if that would also be an option in the future for other slow developing air layers as well since most of my stock trees are landscape or kept field growing in the ground year round.  I might leave one or two air layers in place to see how they winter (possibly additionally wrapping with foam padding).

BTW, Air layer diameters ranged from 1/2" to 2 and I followed typical advice using sphagnum moss snuggly wrapped with clear plastic and aluminum foil only without using root hormone.  Moss stayed moist all summer (only needed to water once in July when inspected).  Possibly the moss was too wet initially or wrapped too tight to allow proper air flow for new roots, though there has been no signs of mold.  I will try again next Summer hoping to get better root generation with my new air layers and will also try some apple, mountain ash and a mature Japanese red maple from my yard that I would like to cultivate as well.  Any suggestions or advice overwintering air layers in cold climates is appreciated.
 

0soyoung

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Re: Basic Air Layer Question
« Reply #16 on: September 18, 2013, 08:49 PM »
Leave them on the tree and do your best to insulate them when it gets cold. If the few roots you presently have get killed, you will just start over next season and, hopefully, a mass of roots will grow more quickly then. If you cut the layer off without enough roots, it will die regardless of what protection you try to provide.
 

sdonny

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Re: Basic Air Layer Question
« Reply #17 on: September 20, 2013, 11:23 AM »
Ok, I will let them overwinter and see is they how they look next June.  Thanks.