RE: Bloom Time Shift
Thanks for the informative response. I think an experiment is in order
for me next spring. I have a H. sieboldiana 'Elegans' and a H. 'Tokadama
Flavocircinalis' that I will cut off the bloom scapes as soon as they
emerge. I will report back in the fall the dates that each bloom scape
emerged and was cut off for each division, the number of bloom scapes
per division that I was able to encourage to grow, and the date that the
last bloom scape began to emerge. Can anyone think of any other
pertinant information to gather?
>From: Jim Hawes[SMTP:email@example.com]
>Sent: Wednesday, October 14, 1998 4:47 PM
>Subject: Re:Bloom Time Shift
>You asked several difficult questions about how one can delay flowering
>of early cultivars such as sieboldianas so that they will correspond to
>dates of flowering of the late fragrant cultivars or species. I have
>never attempted this but I think I understand the various methods one
>can use and the reasons why.
>With that brief summary, lets go to your questions, Norm.
>1.At what point should you cut off the bloom scapes?
>I SUGGEST WHEN IT FIRST EMERGES.
>2. How many times can you do this before the plant gives up?
>AS LONG AS IT HAS LEAVES, IT NEVER "GIVES UP", ANTHROPOMORPHOLOGICALLY
>3.How late can you expect to have blooms given this method?
>PROBABLY UP TO FIRST FROST OR FREEZE DATE
>4. What chemical does blooming produce that causes the plant not to send
>up another bloom scape?
>AS EXPLAINED PREVIOUSLY, ONE GROWING DIVISION PRODUCES ONLY ONE SCAPE.
>THEN THE DIVISION MAY OR MAY NOT BRANCH. EACH BRANCH HAS THE POTENTIAL
>TO BLOOM.THE HORMONE INVOLVED IN CONTROLLING APICAL DOMINANCE IS AUXIN,
>PRODUCED IN THE ACTIVELY GROWING CELLS, ALSO KNOWN AS INDOLEACETIC
>I realize this sounds very complicated...that's because it is. My
>discussion is a very simplistic one but I am sure you get the gist of
>the processes involved.
>Jim Hawes Oakland MD
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