Susan Hayek
Tue, 09 Mar 2004 14:25:07 PST
**I bought lots of Pacific iris with us and I have regular bearded 
iris (which are being slugged to death). So where is a good reliable 
source for some of the others you've mentioned?


>  >>If I can get healthy bulbs of Iris reticulata, Iris histroides, 
>and their hybrids, they are long-lived in the garden in areas not 
>watered in summer. They flower best if planted deeply. The problem 
>is that most commercial stock is infected with ink spot disease, 
>which soon debilitates the plants once they are not subject to the 
>Dutch cycle of lifting, treatment, and controlled storage. Growing 
>I. reticulata from wild-collected seed was a revelation for me: 
>plants three times the size of commercial varieties, and setting big 
>seed pods.
>A few bearded irises have persisted here, notably I. albertii, wild 
>forms of I. pallida, and I. subbiflora.


>Some Juno irises seem to be doing all right outdoors here, in 
>particular I. magnifica, I. vicaria, and I. bucharica, all of which 
>are readily available. I grow them on the rock garden. Now I'm 
>trying some selections of the Regelia species I. stolonifera 
>outdoors. Oncocyclus irises cannot be grown in the open in the 
>Pacific Northwest, and hardly can be grown under cover, unless you 
>use fungicides and keep them dry until late winter.
>The bulbous irises of the Xiphium section are represented in our 
>gardens mostly by "Dutch" irises, which don't persist here over many 
>years since their winter-growing foliage gets frozen. Far better is 
>the "English" (actually Spanish) Iris latifolia,


>Iris unguicularis is increasingly grown in the Pacific Northwest, 
>though it can be expected to suffer in our colder winters. (I keep 
>some in the bulb frame as insurance.) Its close relative I. lazica 
>is more cold-hardy and flourishes here, as do most plants from the 
>Pontic region, its home.


>Spuria irises do very well here, but they are grown mainly by 
>specialists, since they take up a lot of space for the sake of a 
>very short season of proportionately small flowers. Siberian irises 
>are fine as long as I get them in spots where the soil is retentive 
>enough. Iris cristata cannot be grown here because of the slugs, 
>which love it intensely. Japanese irises (I. ensata) do not flower 
>for me, I suspect because of too much night cooling at this 
>elevation; they are hot-and-humid-summer plants and do fine on the 
>valley floor 1500 feet (500 m) below me.

Owned by Jasper & Schubert the Standard Poodles, Pup-Quiz the 
Basenji, puppy Basenji boy, Jones, & Gracie the Rhodesian
On the North Coast of CA, USA, copyright 2004

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