Re: CULT: ?huge vs small rhizomes
- Subject: Re: [iris] CULT: ?huge vs small rhizomes
- From: "John Bruce" j*@cinci.rr.com
- Date: Tue, 23 Aug 2005 00:46:11 -0400
- List-archive: <http://www.hort.net/lists/iris/> (Web Archive)
I think there are a lot of factors involved. I am not sure water is
one of them. I have some monster rhizomes here this year and they have only
gotten the water that mother nature provided--according to the weaher
people we have gotten 7.8 inches since May 1, and that is about 1" more than
my
rain gauge has tallied. Temps have been harsh as well, with 30 days over 90
degrees.
There has been a lot of sun. One thing they get more of (in most years) on
the left coast is
sun, and more intense sun than the midwest. We have had extreme UV readings
here this
summer.
I am sure fertilizer plays a role, especially phosphorus and potassium. When
a bed is dug
it gets a nice dose of triple superphosphate (0-45-0) and muriate of potash
(0-0-63). The
pH is slightly acidic at about 6.5, which is good for uptake of these
nutrients. Rhizomes
are modified stems, and those are good eats for stems. The weeds have been
minimal this
season, so competition for nutrients has been virtually nonexistent.
Crowded, mature clumps tend towards smaller rhizomes. Big nurseries dig
every year, so there is no
crowding.
Genetics also come into play. Some varieties grow larger rhizomes than
others.
There are probably some other factors in play as well, these are the first
that came to mind.
John Bruce
SW OH, zone 5b
> I got this question offlist - will let the rest of you mull it over ..
>
> My first thought is water....
>
> <Can you give an opinion on why the Rhizomes from
> some sale gardens are huge and others are not?
> Scheiner's verses Mountain View?>
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