Many good clone SoP threads here already, wasn’t sure we really needed another one, but the SoP I have evolved over the last few years gets us close to 100% success rate, and leads the way in to a 10 to 15 day veg.
Roots at Day 16
Of course, start with vigorous healthy plants.
Big cuts will take another day or so to start busting roots, but will blow past small cuts very quickly. For genetics preservation, little cuts are fine, but for production, bigger the better.
Take big chonky cuts, using scissors.
Optional: Dunk in Athena IPM.
Place the cuts in a cup of water. Most tap water is sufficient. Don’t use RO or super low EC water, they need some EC to not get weird.
Leave the cuts in the cup for 4 hours.
Make a 45 degree angle cut using a scalpel, NOT scissors. Scalpels are cheap on Amazon. Important to not use scissors for this part.
Dip the cuts in Athena Cuts. I went from Clonex to Athena cuts and saw a big improvement. If you cheap out here, you will not get the same results.
Stick the cuts in small rockwool cubes. The 1.5" are popular. We take Grodan Uni Slabs and cut them in to 2" cubes. Remember to presoak rockwool at 5.3 pH, in your flower nutes solution. Don’t use veg juice, use flower juice, much better for starting roots.
Place cuts in a tray and put the dome on. Leave it for 4 hours.
Put them under low level lights designed for clones. The Luxx Clone LEDs are arguably in a class of their own, but very hard to find now. You are looking for 8k to 12k on a Lux meter.
After 4 or 5 days, open the dome vents. If they flop, close the vents again, but they should be ready for drier air.
Once the cubes get a bit dry, anywhere from day 6 to 11 or so, dunk the cubes in veg nutes.
You should have serious roots busting out anywhere from day 11 to day 16, and be near 100% success rate!
Edit: Typo
