Howdy, Folks....
I use weeping willow because that is what's available. I can only assume other willows have the same compounds.
You'll need to use new growth wood, not deadfall. New growth wood is what contains the auxins you want to use.
Cut your branches into 3" or 4" pieces. One cup of twigs will give you a nice "stock" to work with. Put them in a stock pot and cover with one quart of water, bring to a boil then simmer for 20 minutes or so, covered. Let it sit over night to cool. Strain the sticks out and store this liquid in the fridge for several months if you like.
I've used it as is (straight) for dipping cuttings in (bring to room temperature the amount you're going to use) or you can dilute it 50/50 with water. The best thing about making this strong stock is you can use it for many cuttings at different strengths. For example, green tip cuttings of gardenias will be fine using a 50/50 dilution (or less), woodier cuttings (hardwood) may do better using full strength.
This solution is also a nice "pick me up" for ailing plants when diluted and used as a foliar spray or lightly watered around the root system.
Go for it! Have fun!
Shoe
