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propagating grevilleas

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Posted by MARCUS 19 Apr 2010 - 7:13:00 PM

I have a number of different Grevilleas in my garden, which I would like to propagate. I'd appreciate any advise about propagation, as I have had no success in getting seeds to germinate, and some varieties don't appear to produce seeds. My attempts at propagation are for my own personal use, and I have no large scale capacity, and indeed, limited backyard facilities.

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Re: EDITOR 20 Apr 2010 - 5:41:00 PM

Propagation method across the many grevilleas depends a bit on which grevillea you're dealing with. Another good reason to keep track of exactly what's in the garden.
But cuttings are generally the preferred way to go although still not easy.
Now's a good time to harvest semi-hardwood cuttings rather than soft spring growth, hardened winter growth or when the parent plant is putting its energy into flowering.
Cut just below a leaf node so the cuttings are about 10cm long and remove the lower half of leaves. Skin a couple of strips of bark from the cutting base to expose the soft tissue beneath and dip into a rooting hormone gel.
Plant a few centimetres deep into ordinary potting mix. Ideally, keep the soil moist and warm, and the air around the foliage humid.

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