Re: repeat bloom


Greetings to all.  I have been a silent member of sibrob for many 
months, but  I couldn't resist to Marty Schafer's request relating to  
repeat bloom.  I live in Chelsea Québec (zone 4) which is located 
a few miles North of Ottawa.  I have been growing Siberians for 
11 years and I made my first cross in 1996.  Since that time , I 
have made more and more crosses every year.  Growing and 
hybridizing Siberians have become a passion.

Many Siberians do repeat from time to time here: Temper 
Tantrum, Lavender Bounty, Sprinkles, Lucky Lilac, Ever Again, 
White Prelude.  But for reasons which are unclear to me, 
varieties coming from the breeding lines of Bee Warburton and 
Schafer/Sacks are by far the best repeaters in my garden.
Reprise, George Henry are reliable repeaters, while Springs 
Brook blooms for a very long time then sends a few repeat 
stalks.  In 1999, Trim The Velvet and Blackberry Jubilee 
repeated, but the star was Countess Cathleen (Schafer/Sacks 
'97) which bloomed non stop for 3 weeks, took a break of about 
10 days, then repeated for 2 weeks.  Countess Cathleen also 
repeated heavily in 2000. Pleasures of May is also a good 
repeater.  Some of my own seedlings from crosses involving 
Careless Sally repeated until the end of July in 2000.
From what I have seen, the best repeats come from 2 or 3 years 
old clumps.  Good culture seems to promote repeat while 
temperature (rain or drough) do not seem to play an important 
role.
Jean-Marc Boileau
In Chelsea (zone 4) where it is snowing...again.  
   







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