Penstemon strictus

Rocky Mountain Penstemon

 
  • Blue and Purple Penstemon strictus, Penstemon strictus, Rocky Mountain Penstemon

Rocky Mountain beardtongue, wth its spikes of bright blue flowers and evergreen foliage, is one of the easiest-to-grow Penstemon. Long lived, this beauty thrives in most any well drained soil with full sun exposure. Drought resistant/drought tolerant plant (xeric).

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Regular Price: $9.99

Sale $7.99

per plant - 5" deep pot You save: 20%
Zones 4 - 9
Advantages
Attract Hummingbirds
Attract Hummingbirds
Bee Friendly
Bee Friendly
Rabbit Resistant
Rabbit Resistant
Easy to grow
Native
Evergreen
Evergreen
High Impact - Low Maintenance
Light Requirements
Full Sun
Full Sun
Annual Rainfall
Drought Resistant / Waterwise
10 to 20", 20 to 30", 30 to 40" (with care)
Ideal Region
Only in Western US
Bloom Time Mid to late spring
Shipping Shipping begins in late February based on ground temperatures, warmest zones first. Learn More…
Size Plant - 5" deep pot
SKU 75775P

Details

24" tall x 36" wide (seed propagated). A native beardtongue of the foothills and mountains of the southern Rockies, this plant grows easily over a wide range of the western U.S. The tall showy spikes of intense blue-purple flowers last for over a month in late spring. Spreading steadily via stolons to form large clumps, Penstemon strictus is one of the longest lived, most easily grown of the Penstemons. A real show stopper! Cut off flowering spikes after bloom; leave a few if reseeding is desirable.
SKU 75775P
Common Name Rocky Mountain Penstemon
Botanical Name Penstemon strictus
Zones 4, 5, 6, 7, 8, 9
Light Requirements Full Sun
Flower Color Blue, Purple
Mature Height 24-30" tall
Mature Spread 36" wide
Bloom Time Mid to late spring
Ships As Potted Plant
Evergreen Yes
Native Yes
Planting Time Spring / Summer, Fall
Soil Type Sandy Soil, Average Soil
Soil Moisture Drought Resistant / Waterwise
Amount of Rain 10 to 20", 20 to 30", 30 to 40" (with care)
Advantages Attract Hummingbirds, Bee Friendly, Rabbit Resistant, Easy to grow, Native, Evergreen, High Impact - Low Maintenance
Ideal Region Western Only, Suitable Above 7000 ft
Neonicotinoid-Free Yes - Learn More
Ships to Hawaii, Alaska & Canada No

Planting Guides

Tips for growing Penstemon (Beardtongue)

Penstemon are generally evergreen and have beautiful flowers that are very attractive to hummingbirds. Most varieties are rabbit resistant.

  1. They need “elbow room”, maximum sun, heat and don’t like to be crowded by other plants.
  2. Plant only in well-drained soils; clay soils and Penstemon are incompatible.
  3. Avoid overly enriched soils; too much compost and fertilizer will shorten their life span.
  4. They establish quickly and the amount and frequency of watering needs to be reduced after about 8 to 10 weeks to create dry conditions.
  5. When using drip irrigation, be sure to put the emitter off to the side of the plant, not right on top of the root ball to avoid overwatering the plant.
  6. Plant high, leaving the top of the rootball just above the surrounding soil to avoid burying the crown of the plant.
  7. Mulch with gravel or pine needles in arid climates. No mulch is needed where conditions are moister. Always avoid bark, grass clippings, or compost as mulch materials.
  8. Allow some of the plants to set seed (don't deadhead all of the flower spikes)*.
  9. Fertilize sparingly. One time each year in the fall is enough. Apply a light application of an organic or natural fertilizer such as Yum Yum Mix as a top dressing around the plants. Don't use high nitrogen water soluble fertilizer like Miracle Gro

*To keep penstemon that have finely textured or matted evergreen foliage looking their best, you'll want to 'deadhead" them. Shear off the fading flowering spikes just as the plant is going out of flower. Gently bunch the flower spikes together with one hand and cut them off at the point where they go down into the mat of foliage with your clipper in your other hand.

Recommended for the following varieties: P. pinifolius types (‘Compactum', ‘Mersea Yellow', ‘Nearly Red', ‘Magdalena Sunshine' and ‘Tall Orange Mix'), as well as Penstemon linarioides v. coloradensis and Penstemon virens ('Blue Lips').

More in-depth guidance for growing Penstemon: Penstemon for the Waterwise Garden, David’s Favorite Plants: Pineleaf Beardtongue, The Beardtongue Family: Penstemania for Penstemon and The Genus Penstemon; The Royalty of American Wildflowers The Genus Penstemon; The Royalty of American Wildflowers (Part 2).


View more Planting Guides, or download our complete Planting Guide for tips on caring for your plants when you receive your order, as well as planting instructions for Perennials, Spring-Planted Bulbs, Fall-Planted Bulbs, Cacti & Succulents, Xeric Plants and more.

Shipping

Plant Shipping: Buy now and we will ship your order at the ideal planting time for your region. Spring-Planted Perennial and Bulb orders will ship from February 27-June 30, warmest zones first. Most plant orders will arrive within 3-4 days, or less, of leaving our greenhouses. This prompt delivery is provided without additional express charges.

Grass Plugs Will ship at planting time in spring 2017, beginning in late February.

Wildflower Seed & Grass Seed Orders ship within 2-3 days.

Standard shipping costs are $4.99 and up, depending on the size of the order.

Make Fast Even Faster: For ‘Rush’ same week delivery, please call customer service at 800-925-9387.

More Shipping Info

Reviewsby PowerReviews

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by PowerReviews
High Country GardensPenstemon strictus
 
3.7

(based on 3 reviews)

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    • Reviewer Profile:
    • Avid gardener (3)
    • Primary use:
    • Personal (3)

Reviewed by 3 customers

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5.0

Beautiful Penstemon

By 

from Montana

About Me Avid Gardener

Pros

  • Attractive
  • Hardy
  • Healthy

Cons

    Best Uses

      Comments about High Country Gardens Penstemon strictus:

      I have grown this Penstemon for many years-both in Wyoming and Montana. It is one of my favorites in my garden.

      • Primary use:
      • Personal
       
      5.0

      Beautiful!!

      By 

      from Castle Rock, CO

      About Me Avid Gardener

      Pros

      • Accurate Instructions
      • Attractive
      • Hardy
      • Healthy
      • Versatile

      Cons

        Best Uses

        • Garden
        • Outdoors

        Comments about High Country Gardens Penstemon strictus:

        This has been in my garden for 5 years. It has come back bigger and better every year.

        • Primary use:
        • Personal

        (2 of 7 customers found this review helpful)

         
        1.0

        Disappointing

        By 

        from Eastern Plains of Colorado

        About Me Avid Gardener

        Comments about High Country Gardens Penstemon strictus:

        Although I have other thriving penstamens, this plant died soon after planting.

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        • Personal

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        Q & A

        USDA Hardiness Planting Zones

        To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

        • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
        • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

        Find Your Planting Zone:

        Enter your Zip Code to find your USDA Planting Zone

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