Cannabis Soil Layering.

Soil layering could be performed in many ways. The commonest is sometimes known as tip layering. A long, flexible vegetative lower limb is selected for layering, punctiliously bent so it touches the ground, and stripped of leaves and little shoots where the rooting is to happen. A narrow ditch, six inches to a foot long and two to four inches deep, is dug parallel to the limb, which is placed along the base of the ditch, secured with wire or wooden stakes, and buried with a little mound of soil.

The buried section of stem could be girdled by cutting, crushed with a loop of wire, or twisted to interrupt the phloem tissue and cause the accumulation of substances which promote rooting. It can also be treated with expansion regulators at this time. Serpentine layering might be used to form multiple layers along one long limb. A couple of stripped sections of the limb are buried in separate ditchs, ensuring that one node remains above ground between each set of roots to permit shoots to develop. The soil surrounding the stem is kept damp at every point and may require wetting a couple of times each day. A tiny stone or stick is inserted under each exposed section of stem to stop the lateral shoot buds rotting from steady contact with the clammy soil surface.

Tip layers and serpentine layers might be started in little boxes placed close to the parental plant. Rooting typically starts inside 2 weeks, and layers might be re moved with a pointed razor or clippers after four to 6 weeks. If the roots have become well established, transplanting could be tough without damaging the tender root system. Shoots on layers keep growing under the same conditions as the parent, and less time is required for the clone to acclimatize or harden-off and start to grow by itself than with cuttings. In air layering, roots form on the aerial portions of stems that have been girdled, treated with expansion regulators, and wrapped with clammy rooting media. Air layering is an ancient sort of propagation, doubtless designed by the Chinese. The traditional technique of goo tee uses a ball of clay or soil plastered around a girdled stem and held with a wrap of fibers. Above this is postponed a tiny container of water ( like a bamboo section ) with a wick to the wrapped gootee ; this way the gootee remains wet. The most troublesome problem with air layers is the bias for them to dry out quickly. Comparatively small quantities of rooting media are used, and the position on aerial parts of the plant exposes them to drying winds and sun. Many wraps have been tried, but the best appears to be clear polyethylene plastic sheeting which permits oxygen to enter and keeps moisture well. Air layers are quickest to make in greenhouses where humidity is high, but they can be used outside as long as they are kept wet and do not freeze. Air layers are most helpful to the greenhorn propagator and breeder because they take up tiny space and permit the efficient cloning of many people.

Making an Air Layer.

A recently sexed young limb 3-10 mm ( one / eight to three / eight in. ) in diameter is selected. The location of the layer is generally a spot thirty centimeters ( twelve inches ) or even more from the limb tip. Unless the stem is especially robust and woody, it is splinted by positioning a thirty centimeter ( twelve in. ) stick of roughly the same diameter as the stem to be layered along the lower edge of the stem. This splint is tied in place at each end with a chunk of elastic plant-tie tape. This enables the propagator to deal with the stem more confidently. An old, dry cannabis stem works rather well as a splint. Next, the stem is girdled between the 2 ties with a twist of wire or a diagonal cut. After girdling, the stem is sprayed or dusted with a microbicide and expansion regulator, trapped with one or 2 smatterings of unmilled sphagnum moss, and wrapped firmly with a tiny sheet of clear polyethylene film ( 4-6 mil ). The film is tied soundly at every end, firmly enough to make a water-proof seal though not so tight the phloem tissues are crushed. If the phloem is crushed, compounds mandatory for rooting will amass outside the medium and rooting will be slowed.

Plastic florist’s tape or electrician’s tape works really well for sealing air layers. Though polyethylene film keeps moisture well, the moss will dry out ultimately and must be remoistened intermittently. Uncovering each layer is unreal and would bug the roots, so a hypodermic syringe is used to inject water, nutriments, anti-fungal agents, and expansion regulators. If the layers become too humid the limb rots. Layers are checked continually by injecting water till it squirts out and then really gently squeezing the medium to get rid of any additional water. Heavy layers on thin limbs are supported by tying them to a huge opposite limb or a little stick anchored in the ground. Rooting starts within 2 weeks and roots will be detectable thru the clear plastic inside 4 weeks. When the roots appear adequately developed, the layer is removed, thoroughly uncovered, and transplanted with the moss and the splint intact.

The layer is watered well and placed in a shaded place for one or two days to permit the plant to harden-off and adapt to living by itself root system. It is then placed in the open. In hot weather, big leaves are removed from the shoot before removing the layer to stop over the top transpiration and shriveling. Layers develop fastest shortly after sexual differentiation. Many layers might be made from staminate plants to save little samples of them for pollen collection and to preserve space. By the point the pollen folks start to flower copiously, the layers will be rooted and might be cut and removed to an isolated area.

Layers taken from pistil late plants are used for breeding, or saved and cloned for the following season. Layers frequently appear recharged when they’re re moved from the parent plant and start to be supported by their own root systems. This may mean a clone will keep growing longer and grow up later than its parent under the same conditions. Layers removed from old or seeded elders may continue to produce new calyxes and pistils rather than finishing the life cycle together with the parents. Regenerated layers are handy for off-season seed production.

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