Irises forum: Best fill for raised beds

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Name: Darcy
Reno, NV (Zone 6b)
Jul 30, 2020 8:16 PM CST
Hi All,
My hubby built me a new raised bed for my iris. I have to "import" something to fill it with. My choices are:
TOP SOIL (sandy loam)
DOUBLE MIX (topsoil + compost)
TRIPLE MIX (topsoil + compost + sand)

What would you use?
Name: Robin
Melbourne, Australia (Zone 10b)
Region: Australia Irises Garden Photography Cat Lover Seed Starter
Jul 30, 2020 9:05 PM CST
I don't know which choice is best. The soil I used in my raised beds is described as "sandy soil, composted organic matter and composted manures" and my irises love it.
Name: Sulli
Philadelphia (Zone 7a)
Aug 2, 2020 1:20 PM CST
I'm making new beds, not raised but using as much compost as I can afford. It's very rich however so I would go with the triple mix with the sand to make sure it's not too heavy or compacts easily. I have been planting "high" and will be hilling my iris in my beds to keep them from sinking down, amending the hills with some sand/perlite if I need to. I'm not planting till later though so I have some time to figure out.
Name: Teresa Felty Barrow
South central KY (Zone 6b)
Consider the lilies of the field
Seller of Garden Stuff Irises Hostas Region: Kentucky Lilies Peonies
Region: United States of America Garden Photography Vegetable Grower Hummingbirder Cat Lover Heucheras
Aug 4, 2020 12:51 PM CST
I was wondering if many use sand in their iris beds? I have a heavy clay that I like to add compost to, but never have used sand. We can have lots of rain so I try to hill them up a bit above the flat surface to help combat rot.
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