= Water twice per month or less, once established.
= Water about once per week, once established.
= Water about twice per week, once established.
= Water three days per week, or more.
Use the plant water needs as a guideline. Actual plant water needs will vary for several reasons, including weather conditions, soil type, sun exposure, root depth, wind and elevation. Adjust your watering schedule as needed to meet the plants' needs at your site. Water recent transplants more often than established plants.
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Oenothera macrocarpa subsp. incana
low, very low
yellow
early summer to frost
4 to 6 in.
12 to 18 in.
No
southern Great Plains of United States
sun
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.
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