American Senna Senna hebecarpa - Cassia hebecarpa

Detailed Listing For
Botanical Name:

Senna hebecarpa







Common Name:

American Senna

Seeds Per Pound:
3.74 lb
Average Viable Seeds/Packet:
Germination Test Type:
3-6 feet
Collection Locale:
Crop Year:
Minimum Hardiness Zone:
In Stock: 3.74 lb
Items are priced on a curve, you can buy any 'bulk quantity' up to what we have in stock, some examples are:
1 packet (~ 14 seeds)
10 gram (~ 418 seeds)
1 oz (~ 1186 seeds)
4 oz (~ 4745 seeds)
1 lb (~ 18979 seeds)
Growing Info, follow in order:
Scarification: Soak in hot tap water, let stand in water for 24 hours. Soak in hot tap water, let stand in water for 24 hours, repeat process on seed that did not imbibe.
Stratification: none required. none required.
Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed.
Other: boiling water can be used if hot water does not scarify the seed.
In a Nutshell:
* Senna hebecarpa ( American Senna or Wild Senna ) is an ornamental plant native to North America , specially Canada and the United States . more...

Clusters of light yellow to orange flowers atop a sparsely branched perennial or in axils of compound leaves.

The flowers of this large plant are not typically pea-like. Two other species, Sicklepod (S. obtusifolia) and Coffee Senna (S. occidentalis), are also found in the East. Southern Wild Senna (S. marilandica) is a more southern species with fewer flowers and bigger leaflets. more...

Senna hebecarpa (Fernald) Irwin & Barneby
American senna

Senna hebecarpa

American Senna

Conservation status

Secure (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Caesalpinioideae
Tribe: Cassieae
Subtribe: Cassiinae
Genus: Senna
Species: S. hebecarpa
Binomial name
Senna hebecarpa
(Fernald) Irwin & Barneby
Cassia hebecarpa Fernald
Cassia hebecarpa Fernald var. longipila E.L. Braun
Senna hebecarpa (Fernald) Irwin & Barneby var. longipila (E.L. Braun) C.F. Reed[1]
Senna hebecarpa (American Senna or Wild Senna) is an ornamental plant[2] native to North America, specially Canada and the United States.

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Wild senna is a large, long-lived, herbaceous perennial, legume, .5 – 2 meters tall. The stout, central stem is light green, and slightly hairy in the upper stem and at the base of the upper compound leaves. The compound leaves are even-pinnate with about 10 – 20 leaflets. The medium to dark green leaflets are individually up to 2 - 5 centimeters across. Each leaflet is oblong, with smooth margins and a pointed tip. Near the upper base of a compound leaf is a small club-shaped gland; this gland secrets nectar to attract certain kinds of insects. From the axils of the upper compound leaves upright racemes of yellow flowers form from July – August. Each unscented flower is about 15 millimeters across; has 5 pale yellow sepals and petals, 10 stamens with black anthers and a conspicuous pistil with long white hairs. The dark brown seedpods are about 10 centimeters long when fully mature in September – October. The seed pods have 10 – 18 segments and split explosively. There are about 50 seeds/gram.
The root system of wild senna consists of a central taproot and rhizomes which often forms vegetative colonies. It is not yet known if the plant has the ability to fix atmospheric nitrogen.
Distribution: Wild senna is widely distributed in the eastern U.S. from Ontario, Canada south to Georgia. It is generally found on disturbed sites, moist meadows, pastures, fields or roadsides in full or partial sun. It often flourishes within the floodplain of rivers. While it prefers moist soils it will also grow on dry sites.
Plant Production
To produce plugs, seed should be sown indoors at least 7 weeks before transplanting seedlings outdoors.

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Usda description:
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