Monday, March 2, 2009

How to Propagate Shrub by Cuttings

By Michael Hills

This is the most commonly used method of propagating shrubs. Cuttings may be taken at two times: in winter, when the wood is hard and ripe, and in summer, when the young stems are soft and green. Winter or hardwood cuttings are the simplest require no special equipment. All that needs to be done is to plant them out in nursery beds or frames. Summer or softwood cuttings require constant humidity and are placed in a propagating frame or greenhouse or in boxes covered with glass.

Such plants as Hippophae rhamnoides, Chaenomeles lagenaria, Rims typhina, Rubus sp . or Campsis radicans can be propagated in this way. It is best to take the cuttings in December before the soil freezes.

The earth is removed from one side of the shrub to expose the roots and a certain number of these are cut off, but only so many as not to cause serious damage to the parent plant. Best of all are roots as thick as a pencil.

These are then washed and cut with a sharp knife into sections of 6-8 cm in length, which are then planted in boxes or pots containing equal parts sand and peat.

The root cuttings are inserted at an angle and care must be taken that this is done with the top part (the cut closer to the stem) up. The cuttings are then covered with a 1 cm layer of the same mixture. Afterwards, the soil is well watered and the box placed in a dark place with a temperature of about 15C.

Subsequently, the cuttings should be sprayed lightly from one to several times a day and shaded from full sun. After the callus or first roots appear watering should be gradually increased. - 15266

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