Jamaican Porterweed (Stachytarpheta jamaicensis)

Common names:
Give a thumbs up Jamaican Porterweed
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Give a thumbs up Cha-do-Brasil
Give a thumbs up Gervao-Azul
Give a thumbs up Orgibao

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Plant Height: 12 - 18" NO MORE than that! IMPORTANT
Plant Spread: 24 - 36 inches
Leaves: Evergreen
Flowers: Showy
Flower Color: Blue
Bloom Size: Under 1"
Flower Time: Late winter or early spring
Late spring or early summer
Late summer or early fall
Late fall or early winter
Suitable Locations: Xeriscapic
Uses: Groundcover
Wildlife Attractant: Bees
Resistances: Humidity tolerant
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots

Though small, flowers are striking esp. in the wild, usually by r

Photo gallery:
Location: Mysore, IndiaDate: 2014-10-07Though small, flowers are striking esp. in the wild, usually by r
By Dinu
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Location: Mysore, IndiaDate: 2014-10-07Invasive in the wild.
By Dinu
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Date: 2012-12-03Credit Brandon Trentler
By admin
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Posted by flaflwrgrl (North Fl. - Zone 8b) on Sep 18, 2011 8:19 AM

This is the Florida NATIVE porterweed. I can not stress this strongly enough! There is much confusion over this, and many, many people think they have the native porterweed variety when they in fact DO NOT. Nurseries sell many mislabeled plants and they aren't even aware of it. There is much conflicting information on the Internet about the difference between this and the non-native, invasive variety. Plant databases have misinformation on the subject. And there is even much confusion over the name of the native species of porterweed. So be careful out there!
There is one sure way to tell the difference. The native variety ONLY gets 12" in height, or 18" if you count the bloom stalk. If you have a blue (or other colored) porterweed, which is over 2' tall, then you have a non-native, very invasive species.

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Discussion Threads about this plant
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dainty little blue flower? by bear Feb 27, 2012 2:18 PM 1
Hummingbird photos by sandnsea2 Feb 8, 2015 9:41 AM 1,686
Stachytarpheta urticifolia (Porterweed) ? by bonitin Nov 6, 2011 9:04 AM 6

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