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Weed/Grass Question...Some Iris Less Prone?

Posted by jmcbackyarddigger z6b So IL (My Page) on
Wed, Jul 10, 13 at 19:38

My biggest beef against bearded iris is that grass and weed control for them is horrendous. (when compared to a hydrangea, or a black-eyed Susan, or a chrysanthemum etc., etc.)

I hate to part with iris altogether, so I'm wondering if there are any cultivars that grow in such a way that they are less prone to invasion by weeds and in particular grasses.


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RE: Weed/Grass Question...Some Iris Less Prone?

The iris that is the best at resisting weeds is the one that grows behind a weed barrier, at least in my yard. And I don't mean fabric spread horizontally across the surface, but a vertical barrier. We have a lot of quackgrass, and I don't plant much without getting it out first and making a barrier around the bed. That said, I would think that some of the older, really tough historics would be your best bet for growing on in spite of weeds.


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RE: Weed/Grass Question...Some Iris Less Prone?

Your problem may be because iris leaves are upright and do not shade the soil the same way as plants with horizontal leaves.

I don't know of any irises that shade the ground the same way as hydrangeas. Mulch is probably your best bet. It will prevent weeds and grasses from growing in your beds.


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