The German Iris I Moved Last Fall Didn Bloom–There Were Lots of Leaves but No Flowers. What Happened?
Iris germanica, the big rhizomes with huge June flowers, often bloom sparsely the first year after being divided and transplanted. Late August is a good time to move them, but they shouldn’t be moved later than the end of September. Be sure to set the rhizomes parallel to the soil surface and close to the top of the garden bed, no more than an inch beneath the soil. Planting too deeply make cause bloom failures. Choose a very sunny spot. Once the plants settle in, they will bloom more heavily the second and third year after transplanting.
