Om du frågar mig tål rosenrot allt. Den gror snällt från frön och den tål att delas precis hur som helst. Åtminstone här i zon 7. Overkill med auxin. Men det kan vara bra att kunna till annat som är kinkigare. Sidan jag visar till på GN är bra, här kommer ett annat "klipp" om rotning.
Willow water
Save the water in which willow branches were rooted. It's called "willow water."
If you're older than dirt, I'll bet you've heard of willow water. But have you heard of auxin, the natural chemical that promotes rooting? Willow water is a real old-time trick to speed the root growth of cuttings, without chemicals, and auxin is the scientific reason why it works. Auxin is a naturally occurring chemical that, when released by environmental conditions in the early spring, aids root growth. Auxin is concentrated in the new buds on trees and shrubs, but particularly poplar and willow. Auxin hastens rooting on early cuttings of geraniums, coleus, fuchsias, etc.
Of all our locally growing trees or shrubs, the poplar and willow have the highest concentration of auxin.
How to make "willow water" for starting cuttings -- without growing willows:
Gather the willow end shoots as hardwood cuttings (poplar has less auxin) and stand them in a jar of tap water for at least a day or so. A very general concentration of auxin is difficult to measure, but use about 12 stem pieces in a quart of tepid water. Soak for a few days, and then add your cuttings to the water. Once rooting begins, pot or plant them and use the willow water for their first drink after potting the cuttings. Or if you prefer to root in sand or soil, use your willow water with auxin to water the leaves of cuttings after sticking them in the rooting mix.
Auxin is only present in the branches until the buds form but you can take advantage of it next year by taking cuttings early in the spring and storing them in Zip-lock bags in the freezer for use later in the year. Just think: Rooting naturally without chemicals!
/Åsa
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