Coffee Senna (Senna occidentalis)

Common names:
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General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Annual
Sun Requirements: Full Sun
Water Preferences: Mesic
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Plant Height: 2 to 4 feet, possibly 6 feet
Plant Spread: 2 to 4 feet
Leaves: Malodorous
Fruit: Showy
Other: 4 to 5 inch woody pod containing 20 to 30 seeds
Fruiting Time: Late summer or early fall
Flowers: Showy
Flower Color: Yellow
Bloom Size: 1"-2"
Flower Time: Late spring or early summer
Summer
Underground structures: Taproot
Uses: Will Naturalize
Resistances: Humidity tolerant
Propagation: Seeds: Scarify seeds: Soak in warm water for 12 to 24 hours before sowing
Days to germinate: 3 to 5 weeks

Image

Comments:
Posted by imabirdnut (North Texas - Zone 7b) on Aug 16, 2012 2:58 PM

Annual here in North Texas. It is a host plant for
Cloudless Sulphur (Phoebis sennae)
Orange Barred Sulphur (Phoebis philea)
Sleepy Orange (Abaeis nicippe)
Little Yellow (Pyrisitia lisa)
Tailed Orange (Pyrisitia proterpia)

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Posted by poisondartfrog on Sep 24, 2017 7:31 AM

Seeds germinated readily and grew into a small-medium sized shrub festooned with golden yellow buds and flowers. Reports of malodorous foliage were confirmed when I handled the plant to collect seeds. Collecting the seeds was unsettling for this ophidiophobic gardener. The seed pods rattled ominously, causing me to look around more than once to make sure I was alone.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Curious of the name of this plant by Britbolt Sep 10, 2016 12:15 AM 11
Brazilian tree with yellow-orange blooms by bonitin Nov 11, 2011 10:47 AM 21

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