Photo by Melody

PlantFiles: Scarlet Penstemon, Heller's Beardtongue, Hill Country Penstemon
Penstemon triflorus

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Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: triflorus (TRY-flor-us) (Info)

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Category:
Perennials

Height:
18-24 in. (45-60 cm)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun
Sun to Partial Shade

Danger:
Unknown - Tell us

Bloom Color:
Pink
Rose/Mauve
Red

Bloom Time:
Mid Spring

Foliage:
Evergreen
Smooth-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season

Soil pH requirements:
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

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By Jeff_Beck
Thumbnail #1 of Penstemon triflorus by Jeff_Beck

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By Jeff_Beck
Thumbnail #3 of Penstemon triflorus by Jeff_Beck

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Thumbnail #5 of Penstemon triflorus by Jeff_Beck

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Thumbnail #6 of Penstemon triflorus by Jeff_Beck

By frostweed
Thumbnail #7 of Penstemon triflorus by frostweed

There are a total of 14 photos.
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Profile:

2 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive frostweed On Mar 9, 2007, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Scarlet Penstemon, Heller's Beardtongue, Hill Country Penstemon Penstemon triflorus is Endemic to Texas,

Positive LindaTX8 On Feb 22, 2007, LindaTX8 from NE Medina Co., TX (Zone 8a) wrote:

Scarlet Penstemon is a native wildflower in Texas, although somewhat uncommon. The first time I saw it in a pasture I was driving by, I pulled over, grabbed my camera and went over a barbed wire fence to take a photo of it. Then I had to find a way to get one. Fortunately, I found some at a native nursery the next year and I've had this beautiful penstemon growing here ever since. It even tolerates the native soil around here and it always amazes me anything can thrive in that!

Regional...

This plant has been said to grow in the following regions:

Mesa, Arizona
Arlington, Texas
Austin, Texas (3 reports)
Crawford, Texas (2 reports)
Dallas, Texas
Helotes, Texas
Uvalde, Texas



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