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Cloning Step by Step

Sterilize, take, trim, dip, and set. A clean cloning sequence keeps open stem wounds from rotting before roots form.

cloning
Cloning Step by Step — Marijuana Grower's Handbook, page 699
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Gear on the table

Comfortable scissors

Spring-loaded shears reduce hand fatigue on a long run of cuts

Water glasses

One jar holds raw cuts. A second holds trimmed starts so they never dry out

Sterilizer

Alcohol or 3 percent hydrogen peroxide plus towels for the bench, blades, and gloves

Root dip

Use a solution with NAA, IAA, IBA, or a mix of those rooting hormones

Take and trim

Clean first

Wipe the table and scissors. Wash hands and wear latex gloves

Into water

Place freshly cut ends in water at once so they do not wilt

Even length

Line canopies, then recut stems so the tray sits level

Fresh face

Wipe the blades and recut about 1/8 inch (3 mm) off the stem just before dipping

Dip and set

Hormone depth

Dip about 1/2 inch (13 mm) of stem

Planting depth

Set at least 1 inch (25 mm) into the medium

Side roots

New roots emerge from the stem sides and nodes, not from the flat bottom cut

Open wounds

Treat every cutting like surgery. Sterile tools and a clean room matter

First irrigation

pH water

Irrigate with water near pH 6.0 to 6.3

Helpers

Dilute rooting enhancers, compost tea, or mycorrhizae can go in once you start watering

Surface wipe

A light hydrogen peroxide spray on the medium surface acts as an antiseptic

Dome week

Keep a cover on so humidity stays high until roots show