Tim Tyler writes
David Rance wrote:
On Sat, 19 May 2007 Tim Tyler wrote:

I've put together a 'mulberry trees' web site:

-- http://mulberrytrees.co.uk/ --
Very good. I like it. However you make propagation sound terribly
easy. I've tried propagating from my black mulberry for many years,
cuttings and seed, but have consistently had a 100% failure rate.

I haven't experienced any /serious/ problems with
propagation via seeds from fresh fruit.

I clean the seeds, bury them seeds under about 1mm of
purchased compost in the illustrated containers,
put them in a heated incubator and keep them moist.

Some seeds germinate later indoors without heat - if
left long enough.

I expect if I used cold stratification - and was more
religious about cleaning the seeds, soaking them and
using sterile compost - it would work even better.

I'm not sure what to suggest. Perhaps try different seed?

Some of your links were suggesting that some mulberries have male and
female flowers on separate plants (in US many people grow male plants to
avoid the fruit making a mess), so could a female plant produce
non-viable seed?
--
Kay