I often get questions about how to cut an ideal cannabis clone. How big does it need to be? How many nodes should it have? What other considerations need to be kept in mind?
First, let's define three important terms- Node, Auxiliary Shoot, and Terminal Shoot. A Node is an intersection on the stem of a branch where new branches can emerge. Sometimes they come in opposing pairs, and sometimes they appear individually. The branches that emerge from these Nodes are called Auxiliary Shoots. A Terminal Shoot is the top of the branch where the plant is mostly growing from- where it gains length. This can be casually referred to as the "Main Grow Shoot." In some strains, branching occurs from the Nodes without any external stimulation, but in others, the Terminal Shoot must be clipped in order to stimulate branching from the Nodes.
When clones are taken, branches are being cut off of the mother plant. The questions that arise are how much to cut, and what condition the branch should be in before it is considered a suitable clone.
Theoretically, any cutting with a grow shoot can root, even if that shoot is a tiny immature Auxiliary Shoot coming out of a node when the cutting has no Terminal Shoot. However, smaller less-healthy cuttings have a hard time rooting in comparison to taller beefier ones, and Auxiliary Shoots grow out sideways and can take a while to start growing.
On average, clones should be 6-7" tall, and 1/2-1" of that should be submerged below the surface of the medium. Cuttings should ideally have a nice healthy Terminal Shoot and at least one Node below that for best results. More than one Node below the Terminal Shoot is okay too, but no Nodes should be at or below the surface of the medium.
All the leaves on the cutting are best off being trimmed back just a bit so adjacent clones in a shared tray won't overlap each other too much. This is shown in the image above. Overlapping leaves can lower the survival rate of less vigorous cuttings.
That's the introduction for cutting a good cannabis clone. Happy cloning!
4/19/2017 04:39:59 pm
Can u clone of a clone? Amazing read.
2/5/2018 03:47:37 pm
You can clone a clone of a clone endlessly, its an extension of the same plant, genetics don't break down.
5/24/2020 01:49:40 pm
It will indeed break down genetically eventually. It’s like taking a photocopy of a photocopy and so on.
4/4/2018 08:53:53 pm
Does it really help pain?
5/2/2019 06:50:22 am
8/1/2020 11:18:23 pm
@Stickee420 Lol that's hilarious he didn't believe you
11/20/2020 03:52:02 pm
book, Marijuana Propagation? Intrigued that you recommend never to have a node at or submerged below medium surface. Spent most of my life thinking most roots would emerge from the roots on cloned material. Anyway, where can i get your book
12/16/2020 02:29:43 am
6/7/2021 03:28:07 am
You can clone endlessly from clones. I have done this for years with no bad effects. (I also have access to the original mothers so it's not like I forgot what the "original" was like) genetics don't degrade or weaken through cloning. That is total bro science. Big commercial legal grows consistently swap out mothers every 2 or 3 months with new clones from that same mother and do so for years with no problems, simply because the mothers become too big and woody after being cut so often. I have no idea where that myth originated but it makes no scientific or genetic sense at all.
7/23/2021 06:13:54 pm
Tell em, man. That shit he's spouting is straight nonsense
7/26/2022 11:07:12 am
This "bro science" makes total sense. Genetic drift is real. It's not fake news... Cloning does not make perfect 100% genetic copies. Why would we think we can clone perfect copies when even the best scientists have never figured this out.
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Jennifer Martin is a pioneer in American cannabis cloning. Having supplied Bay Area marijuana dispensaries since the passage of Prop 215 in 1996, she helped bring over 2 million marijuana plants into the world. She also won the 1998 San Francisco Bay Area Cannabis Cup with the strain Bubbleberry, by a 32-point spread on a scale of 200. Jennifer lived in Amsterdam in the mid 90's and learned all about the industry and world-class cannabis products.