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GrowFAQ : Cloning : for Hydroponic systems
: Rockwool

Mr. HIGHway’s Cloning Method In Rockwool

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”Mr. HIGHway’s Cloning Method In
Rockwool”
Contributed by: Mr. HIGHway

The first picture are the supplies needed. I use
round RW cutting plugs with a slit down the side.

Items:
1: Rockwool cutting plugs.
2:
Plastic tray with dome.
3: Sterile sharp scissors.

4: Rootech gel (comes in 2, 4, and 8oz bottles).

5: General hydroponics nutrients

I premix a solution of ¼ tsp/gallon GH G-M-B
nutrients and adjust the pH to 5.5. I fill a tray with
the solution ¼" deep.

I then take the cutting, making sure I cut it at
a 45 degree angle, using a sterile sharp pair of
scissors. Cutting right above the node. Making a second
cut under water is optional, I did not, but is highly
recommended. And after making the cut, it is a good
idea, to gently move the cutting back and forth in the
water/cloning solution, to dislodge any air bubbles that
might still be lodged in the stem.

I then dip the cutting into the rooting gel, I use
Rootech (It is a good idea to use a separate container,
and not dip directly into the rooting gel bottle, as
this can lead to bacteria, and or viruses, contaminating
the bottle for future use). The next step is to put the
cutting in the RW cutting plug. Ok, now that you have
taken the cutting, you need to dip it ½"-1" in the
rooting gel. Then you open the plug along the seam, and
carefully place the cutting in the plug.

At this point, the plug is still dry.
After you
have placed the cutting in the plug, then set it in the
tray with the solution. Capillary action acts to pull
the nutrient solution up the cube.
After you have
taken all of the cuttings you need, you then need to
mist the dome, covering it thoroughly and finally
placing it on top of the cuttings.
BTW, the dome in
the picture was used for the purpose of clarity of what
was under it, and was replaced with a 2" tall dome after
the picture.

You're done! Now comes the truly hard part, the
waiting. I have 100% survival rates using this method.

Here some notes that are not in the pictures:

• I cut above the node.
• I did not make a
second cut under water.
• I did not use an anti wilt
spray.
• All the cuttings were taken from two
plants. Each stem was 1" or less in length from the cut
to the first node.

Additional notes:

• I
use General Hydroponics Nutrients (last picture).
•
Humidity stays above 80% under the dome.
• I have
successfully cloned Blueberry, Cinderella-99, Blue
Shamana, and my own strain that I developed.
• Loss
rate for all clones taken using this method are less
than 1%(the only one I ever lost was dropped, and never
recovered).
• The lighting used is Grolux florescent
tubes from 4 Lights of America 24" single tube lights.
80W total.
• Shelving is adjustable in 1"
increments, materials may be found in any Home center.

>
More additional information:

It has
been my experience that the cuts taken below the top
¼-1/3 of the plant have a higher chance of survival.
This has to do with a hormone that the top-most growing
tips release that hinders growth of lower stems. If you
top, and then take clones from the mid part of the
plant, you will get a good balance of less
hormone/vigorous cuttings that have good stem structure.
The lower down you go, the less hormone, but the less
strength the stem has, depending on the strain, and how
full the canopy above it is. I learned this last bit as
I was developing the above technique.

The
process of viable selection before you make the cuts,
IMO, makes the difference between a good success rate
and an outstanding success rate. Make sure that your
prospective cut has a clear shot to the light, as this
will mean it is more viable than one that is taken from
a shaded spot on the plant. That alone probably gives me
an extra 25%+ added to my success rate. I've taken well
over 200+ clones using the above method.

Highway

Last modified: 14:25 - May 10,
2002

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faq:1262 "Mr. HIGHway’s Cloning Method In
Rockwool"