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PENSTEMON GRANDIFLORUS | Large-flowered Beardtongue

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Product Description

Penstemon comes from two Greek words, penta meaning "five" and stemon meaning "stamen". Grandiflorus is after the Latin word meaning "with large flowers".

Can grow to 3 feet with pale pink flowers on a tall stem. Toothed leaves are in pairs on the stem. Prefers fields, prairies and open woods. Blooms from May to July.

Sun Exposure Savanna, Prairie
Soil Moisture Dry Mesic, Dry
Bloom Time
May, June
Bloom Color Purple
Max. Height 2 feet
Wetland Code UPL
Germ Code C 30, G
Seeds Per Packet 300
Seeds Per Ounce  14,000


The Penstemon genus is one of the most difficult to classify; many species are seen to be different only by very close examination and magnification. There are 10 species east of the Mississippi River and while more than 200 species are found in the west and south. There are at least 8 species throughout our area in the north-central US.

Some Native Americans used the plants of the Penstemon genus to treat chills and fever. They also chewed the root to a pulp and placed it in a cavity to relieve toothache pain.

Edible Uses: Unknown

Medicinal Uses:

A decoction of the roots has been used in the treatment of chest pains and stomach aches.

A decoction of the leaves has been used in the treatment of chills and fevers.

Herbal Uses: Unknown

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