Weldenia and root cuttings.

Brian Whyer brian.whyer@btinternet.com
Sun, 12 Feb 2006 10:41:35 PST

I went to the first of this year's AGS Shows/Plant sales yesterday,
where they had a series of demonstrations through the day, including one
on taking root cuttings. The impression given was that this was one of
the most misunderstood techniques, and has the most often repeated
myths, in books, and by people who may not have actually done it to any
significant extent successfully.
The often recommended technique of using the tap root that comes out of
the bottom of the pot, such as in the Lawrence Hill diagram on Weldenia
in "Propagation of Alpines", rarely working, as the best results always
seem to be from a section of root nearest the crown of the plant, this
being true of all plants that can be propagated this way. Apparently
almost all Morisia monanthos in the trade is propagated by root
cuttings, often by cutting off the rosette about an inch below ground
and throwing it away, and using the roots in sections, but maybe this
being relatively easy, is less susceptible to requiring close to rosette
Plants that sucker and have coarse roots with adventitious buds like
Anemone hupehensis and some of the hardy geraniums are apparently
quicker to produce good plants from root cuttings that trying to make
use of the roots with adventitious buds, or the suckers.
Can anybody with lots of experience confirm more success with close to
rosette sections, and has anybody had good success taking root cuttings
of Weldenia.

Brian Whyer, Buckinghamshire, England, zone ~8
And the 2nd RHS London show of the year this Tuesday.

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