Re: CULT: Japanese
From: "R. Dennis Hager" <rdhager@dmv.com>
> Now that I
> have had a good look at the Japanese Iris, I really like how it looks.
> I am unsure of how they do in Kansas.
Michelle,
JI have fairly strict cultural requirements. Your climate is
appropriate, but growing them successfully will require some effort.
JI require acid soil. Have the pH of your soil tested. If it is not 6.0
or lower, you will need to modify it. As a guideline, note what common
acid loving plants grow in your area. If azaleas, rhododendron and
holly grow like weeds for you and your neighbors, your pH is probably
acceptable. If the pH is too high, I would recommend sulfur to reduce
it.
JI must not be allowed to dry out and can tolerate extended periods in
standing water, but do not tolerate standing water in the winter season.
They are also heavy feeders, relative to TB's, with a much higher
nitrogen requirement.
If your pH is too high, you may consider pot culture. If you go that
route, remember that pH of water can affect the pH of the soil. You may
need to acidify the water. That can be done with vinegar.
Successfully growing JI requires a lot of patience. Under the best of
conditions, spectacular display is not attained until the second or
third year.
Good luck.
R. Dennis Hager
on Delmarva, where the JI season is beginning. Four cultivars in bloom
today.
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