Good morning and thank you all again for the good advice.

Water plants should only be split when in good growth. The medium they grow
in is liable to cause rot if the plant is dormant.

This and the other hints should keep me from attacking the Iris now. I
may have been influenced by the other people who chose to just plant
varieties of reed. A recommendation was given to clean out superfluous
specimen during winter. But I found reed quite boring and as « everybody
does it », chose the alternative of three species planted one behind the
other to create a mounting slope of flowers... my english fails me
again. ;-)

Thank you also for mastering the linguistic pitfalls. I learned about
all of it (I maen *all*) in France and would not be able to enlarge
on most “green topics” even in German.

“Pseudoacorus” it is in deed. We have some moist spots on our terrain where my
wife wants to plant the superfluous Iris and I will ask around in our network.
There are enough people who are interested in constructing their own wet park,
as most of the existing wastewater solutions have become illegal or more
expensive.

Have a nice week-end,

Michael
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Location: Lower Normandy (Orne), France
New Key as of autumn 2015:
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sub brainpoolP512r1/53461AFA 2015-10-02 [expires: 2017-10-01]