Graft in Conifers

 

I present you a Graft of Pinus pinea on Pinus halepensis.

 

The conifers, by their resinous sap, must graft in winter, when they emit less resin to be in the period of winter rest. In the conifers the best grafting method is the Graft of lateral Crack under plastic bag, conserving the apex of the host tree, that stretches the sap upwards, which it happens through the graft and it favors its takes hold. If the host is very young you can graft with the method of full single Crack with a small branch of the same thickness that the host. If one is a more grown host, you can graft with the method of lateral Crack with a small branch of smaller thickness than the host. In this last case several grafts and to different heights can be done at the same time.

 

In the case that I present you the host is wider than the small branch to graft and therefore the graft is of lateral Crack. Today is friday at 15 hours of 2 February of 2007, the ground is drenched by a recent rain, does not blow the wind, the temperature is of 12ºC and the sky is cleared.

 

The host is a healthy and vigorous mediterranean pine, Pinus halepensis, of about 7 years old. 

  

 

A zone of the smooth and straight stem is chosen near the apex of the host.

 

 

With the knife to graft you make a cut in the crust in form of small tongue, deepening a little until the wood.

 

 

Here you see the finished cut already.

The same previous cut.

This is the small branch to graft that is due to choose hale and if possible of the part of the pine that watches the south, who receive more solar energy and have more sugars in its leaves and stem.

After taking the inferior leaves, with the knife to graft you cut the inferior part of the small branch in double bevel.

The other face of the cut in double bevel.

The double bevel, side sight.

Now you introduce the small branch in the cut of the host.

The two parts of the graft adjust well.

Next the graft with transparent plastic tape is tied. If with the tied all the zone of the graft is well covered, it is not necessary to put mastic to graft or paste to seal.

The graft is finished.

 

In order to avoid that the grafted small branch dehydrates, you moisten it with clean water.

             

Next you cover the wet small branch with a transparent plastic bag and it is tied on the inferior part.

 

If the host is in a very sunny zone, the graft with a tied branch is covered superficially, so that it does shade to it.

 

 

After thirty days you take off the plastic bag and, when the  bud of the small branch appears in spring, you untie the graft. A few days later the apex of the host over the grafted small branch is cut and gradually in the next weeks you prune all the branches of the host, until only is left the graft.