The Iris Patch - Specialising in Louisiana Iris - based in Whangarei, New Zealand
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RAIN????

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Aaaah Northland

Who's sick of the rain?

Frosty mornings!

How tough are Louisiana Iris...Bullet proof.
We have had more frost this year than I can ever remember and the Irises barely flinch.Not much rain for this part of the country and a friend with tankwater only was lamenting the other day on the low level of their tank.Tough say the irises...we dont care!

Bluest of the blues...

Over the flowering season we have many visitors through The Iris Patch and many of them are Japanese Iris enthusiasts. They marvel at the blue of the Louisiana Irises....Blue Shield..Clyde Redmond and Sinfonietta are my favourites
Clyde Redmond is a little darling. Not such a tall growing Louisiana usually reaching about 60cm. It is a consistent early flowerer and holds its flower until it is the most beautiful wedgewood colour. Truely a beauty. According to my references Clyde Redmond is a cross of Puttytat x Snow Pearl..

May with Louisiana Irises

Here we are almost at the end of May and what a beautiful Autumn it has been after such a lack lustre summer.
Chores in the garden for the louisianas include lots of mulching. It is so easy to get plenty of mulch with all the leaf fall, but my favourite has to be pine needles. Lovely and acidic which is just what the Louisianas love.

Louisianas love rain

So much rain in the North and the irises are laughing. Of cours its not funny at all for the poor folk up KeriKeri and Kaeo way but some success with their preventative measures. Flooding is not new to them.
The Louisiana Iris can take a fair amount of water however and is the ideal plant for that boggy spot, whether it is the edge of a pond or a ditch on the side of the road.
My irises get a fair amount of grey water and flower beautifully.
Keep up the good work in your gardens and remember the big question of the day.

Summer?

Write your post here.Summer!!! What summer you ask? Here in the North we have had such a mixed bag of a summer with humidity, rain, wind...humidity...and so it has gone. But the Louisianas have not minded it at all and I have never seen them with so much leaf for this time of year. Such a comparison to a couple of years ago when they had to hunker down in a drought with barely 5cm of leaf showing. So it looks like a particularly good season coming up.
cheers Debbie

Cultivation of Louisiana Iris

Louisiana iris will grow well throughout New Zealand, but are at their best in warm, humid climates where the bearded iris do not fare so well. Louisiana iris are frost tender but most, if not all, will tolerate light frost and all will grow in cool climates if well mulched in autumn.
They are rather adaptable to situation, requiring sun to give the best performance but growing well in filtered sunlight, particularly in hot climates. Probably the most important requirements of Louisiana iris are an acid soil and adequate water in the growing season.

Pests and Diseases

Louisiana irises are not subject to many disease problems, although those two common problems, rust and leaf spot can devastate them. 
Treatment is with any suitable fungicide -Mancozebseems to be the most effective—and it should be applied quickly and at weekly intervals if either of the problems arise. Prevention would be regarded as far more acceptable than cure. If leaf spot does occur, and it will on certain cultivars in humid weather or when cool nights are followed by warm days, then removal of the infected leaves and treatment of the others is advisable.

The Louisiana Iris

The Louisiana iris is an ideal garden plant for a bog situation or for growing in standing water. For this reason many gardeners like to grow them in pots. Potted plants are beautiful in flower and give accent to a pool at any time of the year. 

Pots should be as large as possible to cope with the vigorous growth and the mixture should be of garden soil, peat moss, compost and well-rotted manure in about equal proportions. 

It should be fertile and an 8—9 month slow release fertiliser should be incorporated in the soil at planting time.
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