I grow these around my pond. Depending on the area of the pond - it's a small skating pond - the sunlight varies. It's been a 4 year project to clear the edges of the pond, and I finally finished clearing last summer. Normally I collect the seeds and scatter them around the pond - I scatter as I collect, as well as transplant the irises when I thin other areas of my garden. But this year I did winter sow some seeds - for areas that I finished clearing this year and thus have no irises there.

It's still pretty weedy down by the pond, but I'm hoping these siberica continue to fill in and crowd out the weeds. I also have blue rug juniper, violets and forget me nots planted around the pond.

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I have white siberian irises that grow next to a garage wall, under a maple tree, in a raised stone planting bed. They get absolutely no sun until about 1PM, then its nothing but hot afternoon sun the rest of the day. The soil is well drained, and dry. They do very well and had to be split after the first three years.

My purple siberian irises grow in moist shade next to hostas and heuchera under a maple tree and get very little sun. They've done great for the past two years they've been here.