= 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 strictus
very low
purple
May to June
18 to 24 in.
12 to 18 in.
Yes
southwestern United States
sun to part shade
USDA zones 4-9
hardy to 8,000 ft.
Rocky Mountain penstemon is a native perennial flower. It has an upright form and broad, dark green leaves that lay very close to the ground.
The sturdy funnel-shaped flowers of royal blue-purple are borne on one side of a spike. The beautiful flowers may last up to a month.
One of the easiest wildflowers to grow, this native plant is a good addition to low water gardens in the Pikes Peak area. It tolerates many different types of soil and is a vigorous, easy-care plant.
At the Xeriscape Demonstration Garden, this penstemon has spread to several different gardens. At full bloom, the flowers are quite beautiful and are a favorite of garden visitors.
This plant will spread easily by seed. Once the flowers are finished blooming, it's important to cut of the flower stalks to keep them from spreading too much.
Cut flower stalks down to the mat of leaves after flowering to keep the plant attractive and to minimize reseeding.
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