Oenothera macrocarpa subsp. incana
low, very low
early summer to frost
4 to 6 in.
12 to 18 in.
southern Great Plains of United States
USDA zones 4-9
hardy to 7,000 ft.
Silver blade evening primrose is a native perennial flower notable for its large yellow flowers that appear from May until frost. It is a small plant with long, silver leaves and red stems. Very drought tolerant, it is a great plant for adding color to the landscape all season long.
Silver blade evening primrose has been a great-performing plant at the Xeriscape Demonstration Garden. It blooms for an extended period, is deer resistant and is much more immune to flea beetle damage than Missouri evening primrose. It's a short plant, so it needs to be placed in a spot where it will be noticed.
In early spring, cut the old growth to ground level.