I'll trade you half of my cloning abilities for half of your seedling abilities
I might just be an idiot savant when it comes to taking cuttings, but it's also something I've been doing with houseplants, trees, and anything else I want more of since I was but a wee child. Unless your cloning victim completely spluts, it'll grow roots eventually.
All I do right now is:
- Prepare small pot with a seedling soil mix, nicely moistened
- Use a chopstick to make a planting hole for the clone in the soil, deeper than your stem will go
- Chop off the lucky victim branch, trying to get some leaf nodes near the bottom. Clip off those leaves, and cut back lobes of any other fan leaves.
- Re-cut stem at 45º angle (below, but close to the now empty leaf node). I use nice, sharp sewing scissors for this.
- Place it in your hole, making sure to get the bottom leaf node below the soil line, and press down surrounding soil so it stays upright
- Put on humidity dome, move to a dark-ish, warm place for 24-48 hours (I put them on top of my T5s)
- Afterwards, move to seedling-level lighting, leaving humidity dome on and more-or-less airtight for 7-10 days
- Open vent on humidity dome, hopefully very soon afterwards you'll see new growth starting.
I use 1 liter bottles, cut in half, for my humidity domes, and take off the cap after a week. If there's no condensation inside the bottle after I move it into the light, I'll take off the cap and spray with water. Once new growth starts, I take the dome off. I don't notice much of a difference with rooting hormone, Clonex, etc., so at this point I've stopped using it. In two weeks, I usually have a happy little baby
Caveat: this approach isn't like clockwork, and there may be quite a bit of variance in how long it takes for a clone to take hold. Like I said, many root in about 2 weeks, though the current record holder is 7 weeks for me.