= 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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Penstemon fruticosus
low
lilac-purple
late May through mid-June
8 to 18 in.
12 to 24 in.
No
Wyoming to Oregon
sun, part shade
USDA zones 4-9
hardy to 7,000 ft.
Bush penstemon is a compact subshrub with dark green, succulent-looking leaves. In early summer, it grows short spikes violet-blue tubular flowers. The leaves of this penstemon tolerate the bright winter sun well, adopting a glossy, rich burgundy color.
Bush penstemon is a native plant found in the northwest mountain states. Grows well in rocky soil.
There are a few specimens of bush penstemon at the Xeriscape Demonstration Garden that have survived for many years. The flowers are very attractive.
Prune out winterkilled branches as needed.
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