Why wont my seedlings return ?

Robert Hamilton robhamilton@trump.net.au
Sun, 21 Nov 2004 15:16:00 PST
Hi  all,

Firstly apologies  for those  who  receive  this as a  multiple 
posting,  but I  want to  reach as  many  experts  as  possible.

I  have an  ongoing  problem of  not  getting  my winter  rainfall 
South African  amaryllids to  return in their  second  season.  They  
grow  well from  sowing in  autumn  / winter  until  late  spring .  As 
  it  is  now  towards  the  end of their  growing season here I  have  
been  gently  removing the  surface  of  potting mix   and  in most 
cases  am  finding plenty  of  small  bulbs  sitting there   with 
active  roots in most  cases. They  do  occasionally  sprout  the  
following  autumn winter  but  often  a lot  less than  were  present.

There  are  exceptions  and  this  year  Brunsvigia orientalis  , 
Cybistetes  longifolia , Haemanthus  coccinea ,  Nerine  humilis  and  
Strumaria discifera  and tenella  all returned  although  the  latter  
tended  to  remain  evergreen through  summer.

In  past  years  I  have  raised several other  Brunsvigia  , Crossyne 
and   Strumaria  species  without any  problems.

I  have  no  such  problem  with summer rainfall amaryllids with often  
grow   for  12  to 18  months  before their  first  dormancy.

I  wonder  if  our daytime  temperatures  being  too  low is  part of 
the  problem  -    from  late  autumn we often  have prolonged  periods 
  where  daytime   high  does not  get  above
10-12C  with  odd  days    even  lower.   However  there  are  many  
winter  growing amaryllids  which  are  very  happy  growing in the  
garden   here   including  Amaryllis  belladonna, Brunsvigia  
jospehinae , Haemanthus  coccinea    and  Nerine sarniensis  and  
others  of  these  genera  which  I  have  purchased as  more  mature 
seedling bulbs   seem  happy.

I  am  going  to  trial  some  of  the  species   under  glass next  
winter  to  see  if it  helps  with  a  glasshouse  currently under  

I  now   raise  all  these  seeds in commercial seed raising  mix  
50;50  with coarse  sand.

I  would   love  to  hear  of  your  ideas  and  experiences.



Dr R F Hamilton
7 Beach Road
Snug  7054
Zone  9  equivalent  at  43 °S

Dr R F Hamilton
7 Beach Road
Snug  7054
Phone 0362679221
Fax	    0362679041

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