You might want to look at this web page:

http://forestry.about.com/library/si...silacesacc.htm

Priscilla Deverell wrote:
Hello Group,

If anyone knows how to reproduce silver maple or maple trees period,
could
you lend some of your expertise? Here's my story guys..........

Last spring, I decided to grow sliver maple trees from the seeds that
are
produced from it's mother tree in my backyard. The seeds germinated
quickly
and within a week or two I had new saplings (I think that's what you
call
baby trees). However, after a few months they started dying off. Out
of a
total of 20 saplings, 5 survived long enough to be planted in the
ground
before winter. It is spring again and the planted trees are dead. I
am
assuming I did not water enough and/or the soil was not deep enough
in their
individual containers.

If I get a good system going, I plan to reproduce as many as 50-100
trees. I
am a beginner so any help would be appreciated.

Thanks,
Priscilla Deverell
Covington, Tennessee