Re: Re: Dividing Japanese Iris

On Mon, 26 Jun 2000 rdhager@dmv.com wrote:

> Most of my JI's are planted in a swale that drains into a tidal river. I
> have some plantins which are quite robust after 6 years, but others that
> showed signs of decline after the fourth year. I have a few reject
> seedlings down by the river that I basically ignore. They have been
> quite happy for 7 years. I had a single clump of 'Nikko', White Flower
> Farms' unregistered selection that was quite happy for 8 years in a
> sandy loam garden which drained too rapidly. It was showing no signs of
> demise, but I moved it out of fear that it would die. It almost did.
> R. Dennis Hager

Different cultivars seem to require division at different intervals
(numbers of years) and also different drainage systems. If your yard has
a flow of water through it the cultivars will take longer before
requiring division. The flow of water could just be water coming out of
the soil and moving down the slope away from your yard. 

 -- 
Diana Louis <dlouis@dynamicro.on.ca> 
Zone 4/5 Newmarket, Ontario, Canada 
AIS, CIS, SIGNA, IRIS-L, Canadian Wildflower Soc.



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