This is a public-interest archive. Personal data is pseudonymized and retained under GDPR Article 89.

Re: Seed Germination Theory and Practice

Polly M. Law wrote:
> 
> Hi Sol,
> 
> Mr. Deno, a retired chemistry Professor, decided to try to quantify the
> exact germination requirements of approx. 2500 species of plants in the
> first volume, I don't have the second volume so i don't know how many
> more species are covered in that book.
> 
> There is info on how the experiments were set up, how to use Gibberelic
> acid-3, a powerful germination aid that seems to be required by some
> species( BTW GA-3 is available in small quantities from J.L.Hudson) and
> notes on collecting seed. The most valuable part of the book for me has
> been the listings, species by species of the results of his trials which
> enable the gardener to acheive the good results ( or sometimes, decide to
> pop for a mail-order plant if the germination process is too onerous!)
> 
> Anyway, the book is short on snappy prose and graphics but long on
> information.
> 
> Regards,
> 
> Polly M. Law
> 

Polly:

I have both Dr. Deno's original book and his first suplement.  

In his germination trials for species requiring cold, then 
warm conditions, I believe he always used 3 months cold treatment.  
I suppose he wanted the time period to be constant between all
species, and that 3 months was the logical time span to mimic	
spring conditions.

The last 2 winters I started several varieties requiring cold then
warm conditions, and for many of these varieties I found 4-6 weeks
of cold was all that was required for germination.  

For other folks out there who have Deno's germination book(s), do
you all use 3 months cold treatment for all species?

Glen in Regina SK, zone 3

> 
> ---------------------------------------------------------------------
> To sign-off this list, send email to majordomo@mallorn.com with the
> message text UNSUBSCRIBE PERENNIALS.
---------------------------------------------------------------------
To sign-off this list, send email to majordomo@mallorn.com with the
message text UNSUBSCRIBE PERENNIALS.
Follow-Ups: References:
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index