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I will be planting a bunch of tall bearded iris from Zebra Gardens in two weeks.
Some will be planted in an exsisting flower bed in which I am going to be adding three inches of acidified cotton boll compost on the surface. The other bed is brand new dirt in which I will be adding 25% by volume cotton boll mulch & peat moss to the soil after removing the rocks.
Should I add my three inches of compost/mulch on the surface before or after planting the iris rhizomes?
I live in western Colorado and the soil has a fairly high pH.
Any and all comments about Iris planting and culture are greatly appreciated!!!
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