Hygrophila Species, Dwarf Hygro, Indian Swampweed, Indian Waterweed, Miramar Weed

Hygrophilapolysperma

Family
Acanthaceae (ah-kanth-AY-see-ee)
Genus
Hygrophila (hy-GRO-fill-uh)
Species
polysperma (pol-lee-SPER-muh)
Synonym
Adenosma polysperma
Hemiadelphis polysperma
Justicia polysperma
Ruellia polysperma
Sun Exposure
Sun to Partial Shade
Light Shade
Height
12-18 in. (30-45 cm)
Hardiness
USDA Zone 7b: to -14.9 °C (5 °F)
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)
USDA Zone 11: above 4.5 °C (40 °F)
Bloom Color
Dark Blue
Bloom Time
Other Details
Category
Ponds and Aquatics
Water Requirements
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
Patent Information
Non-patented
Propagation Methods
From herbaceous stem cuttings
Seed Collecting
Regional

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Gardener's Notes:

0
positive
1
neutral
2
negatives
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C
C
Woodland Park, CO (Zone 4b) | November 2004 | negative

U. S. FEDERALLY LISTED NOXIOUS WEED.
Not allowed for import to the US and not allowed in any interstate or intrastate transportat...Read More

J
J
North Clarendon, VT | August 2004 | negative

FYI: This plant is a Class A Noxious Weed in the state of Vermont. Its movement, importation, sale, possession, cultivation and/or dist...Read More

G
Bronx, NY | November 2002 | neutral

This common aquarium plant has been listed as a noxious weed by the USDA. Only member of the genus which does not normally grow emersed. ...Read More

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