For the most part all my cuttings come from the tops of plants; I use a domed tray and a heating mat with a controller set to 78°f@Beachwalker This is the only cutting from my Magnificent Seven, now Fantastic Five with Thrips. It took an extremely long time to root, even longer than the majority of my Bubble Gum Cuttings. I believe there are a couple of factors. The first being the temperature drop, it has been pretty dramatic and then there is the location on the plant that the cuttings came from. Now, having just said that I shall contradict myself and say this. This clone in the photo is from the top of a Biker Kush plant and took around 21 days or so to show roots through the rockwool cube but other cuttings taken from lower down the plant, the very bottom branches, have still not rooted and they never will as I dumped them today. I have rooted cuttings taken from the tops of plants, I did it at this time, or around, last year with the 5 Bubble Gum that I've been growing now for just over a year so I know even though only one of these Biker Kush has rooted that the tops of plants can be rooted successfully, takes a little longer than cuttings from elsewhere, I have found but it can be done. And here it is, along with some Bubble Gum Clones taken and re-potted into 1/4 litre pots in a soil mix ( light mix) with additional couple of hand fulls of worm castings. The Biker Kush Clone is first.
They look really healthy, do you just dip them in a rooting gel and pop them straight into that soil mix?
The tricky part is keeping them moist. There's no forgiveness with that rockwool, the cuttings dry out and die if that cube isn't kept wet. I guess the soil mix will hold moisture better.
They get the Serafina double-dip, which means first dipped in clonex gel then in a rooting powder and then they currently go into two parts perlite to one part vermiculite
They sit in about a half an inch of 350 PPM of 20-20-20 plant food, the medium is self-watering
I've use Root Riots in the past and also a bubble cloner, but for some reason I ran into issues with both of the above methods which is why I tried my seed starting mix to root clones and it's working great right now
Regarding thrips I had great results with this product, hope this helps