Replies

“Take a section of the vine that you can lay on the ground. Scrape a bit, sprinkle some hormex on that scrape, lay it down, put some soil on it and and put a brick on top.”

Hormex, a rooting hormone powder, is better? I have some Green Light rooting hormone powder that never seemed to work for me. But I will try that. Thanks!

This is the active chemical. Not sure how much difference there is between types.

https://en.wikipedia.org/wiki/Gibberellic_acid

You could even just scrape it and put the brick on it without any thing else if you want.

There are also video that discuss the old timey way of propagating that use willow water.

Willow Water for Rooting

Bonus!! Here is someone discussing using rock on the branch air layering that I discussed above. (I saw this technique in an old Rodale Encyclopedia of Organic Gardening.)

Willow water and rock on the branch air layer

campisis radicans - (commonly called "trumpet vine", comes in several colors
It is known especially to attract hummingbirds, especially in the scarlet color.

Danie_2023 :" Hormex, a rooting hormone powder, is better?
I have some Green Light rooting hormone powder that never seemed to work for me.
But I will try that. Thanks!"
Campisis Radicans comes in yellow, orange, and scarlet colors, and grows as a vigorous vine
I agree with what Freeper 'Pete from Shawnee Mission' suggested with the scrape and brick.
I have used "Rooting Hormone" (brand unknown right now) but realize that there are two different grades of plant hormone: one for soft plants (annuals, perennials),
and another for 'woody plants' (at twice rate of the active ingredient).
Also, rooting hormone loses its efficacy as it ages, so if its not this years product, chances are it won't take.
Another suggestion is to "air layer" fresh growth tip with a wet moss ball in a plastic bag,
and seal it off with twist ties from the supermarket and keep it out of direct sunlight( or it will steam cook any root formation).
I have even tried to keep/ store hormone in the freezer, but it lost its vigor and strength.
When making cuttings or "air layering":
(#1)try to make an incision in a 45 degree angle (maximum exposure to the hormone)
(#2) wet the cutting in water
(#3) apply the rooting hormone
(#4) seal with the contact brick or within the plastic baggie of sphagnum moss with grocery ties
If "air layering", you may need to tie in a splint along side, in order to support the cutting and keeping the incision, along with hormone closed and prevent drying out.