posted 9 years ago
When you use the scored bark method what you are doing is cutting into the outer layers of the bark down to the cambium layer (where tree growth takes place and nutrients are moved up to the leaves).
I make my cuts with a sterilized, very sharp, knife blade ( I use rubbing alcohol, dip and then light, let it burn off ), I make my slits equidistant around the branch, my slits are cut in a very narrow V shape and about 4cm long.
If I have willow water I soak these slits with it then soak the sphagnum moss in it as well prior to wrapping the slits with it. This gives rooting hormone (natural) to the cambium layer and this tells the cambium to produce roots.
The longest it has ever taken for root formation using this method was 10 weeks (we had a heat wave hit with temps above 100 f for 30 days that year).
The norm it 6 weeks from treatment to roots forming. I always wait to cut the branch off until I see roots filling the sphagnum and pushing against the wrapper, this way I know the new tree will survive the transplanting.
If I don't have a permanent site selected for the new tree (s) I pot them in 5 gallon nursery containers (black plastic variety which I get free from some of my nursery friends, or that I have collected after planting purchased trees, plants and flowers).