🐾
Gift Certificates now on sale. 15% off gift certifiates of $100 or more. Enter code GREENTHUMB in the comments section of your order.
2024 T-Shirts and tote bags now available by phone only. Call our office or nursery to order yours now!
 

 


Icon Legend

New Plant
New/Featured for 2024

Full Sun
Full Sun

Partial Shade
Partial Shade

Shade Lover
Full Shade

Drought Tolerant
Drought Tolerant

Picture Available
Picture Available

Drawing Available
Drawing Available

(PPAF) = Propagation of this plant prohibited without a license.

Hardiness Zone Map


Penstemon ‘Dark Towers’

Penstemon

Beard Tongue

Among the most exuberantly blooming plants this side of the Mississippi, Penstemon are part of the enchantment of the West. A member of the Snapdragon family, even cultivated varieties retain a natural air, with dainty, long trumpet flowers and 5 (pent) prominent stamens. Stur­dy and easily maintained, species usually range from 1 to 3 ft. tall, and vary in color from white to pink to purple to deep wine red to blue—one for every sunny spot. Trim after the first bloom to encourage a repeat flowering, and cut back in autumn for strong growth next season.

<i>Penstemon</i> ‘Dark Towers’

Well-respected Penstemon breeder Dale Lindgren of the University of Nebraska originally bred ‘Husker’s Red’ and now he brings us ‘Dark Towers’, a remarkable Penstemon ‘Husker’s Red’ and Penstemon ‘Prairie Splendor’ prodigy. A vast improvement over his initial introduction, this resolute hummingbird hero delivers darker lance-shaped, plush burgundy foliage and rigid deep purple stems plus regal upright towers, which are openly arranged with abundant tubular pink flowers. The ultrahardy low-maintenance clump can be added to borders, cottage gardens or informal settings, maintaining its opulent coloration during warm summer weather, but pouting in poorly drained soil. (PP#20,013)

Blooms May–June

Size: 2' 0" – 3' 0" high x 12" – 2' 0" wide.

Hardy to zone 3.

  • Catalog Navigation Menu Top
  • Perennials at Digging Dog Nursery
    • Perennials: Acaena to Anthemis
    • Perennials: Anthriscus to Astrantia
    • Perennials: Baptisia to Cynoglossum
    • Perennials
    • Perennials: Fallopia to Gunnera
    • Perennials: Haloragis to Inula
    • Perennials: Kirengeshoma to Morina
    • Perennials: Nepeta to Pulmonaria
    • Perennials: Rheum to Succisella
    • Perennials: Teucrium to Yucca
  • Ornamental Grasses at Digging Dog Nursery
    • Grasses: Acorus to Deschampsia
    • Grasses: Elymus to Uncinia
  • Shrubs at Digging Dog Nursery
    • Shrubs: Arctostaphylos to Halimiocistus
    • Shrubs: Hebe to Weigela
  • Trees & Vines
  • List by Genus
  • Gift Certificates
  • T-Shirts
  • Gift Cards & Etchings
  • Slideshow
  • Gallery
  • Catalog Navigation Menu Bottom

Latest News

2024 T-shirts & Tote Bags now available by phone

2024 Tote Bag Vintage Black 20"W  x 15" H x 5" D 100% Heavy Duty Cotton Canvas $31.75 + $4.00 Shipping Call (707)937-1130 or (707)937-1235 to order yours now!

2024 T-shirts & Tote Bags now available by phone

"Call



Current Staff’s Favorite Plant

Current Staff’s Favorite Plant
Digging Dog Nursery Right Border