Plantae > Tracheophyta > Magnoliopsida > Lamiales > Acanthaceae > Justicia > Justicia americana

Justicia americana (common water-willow; American water-willow; spike justica)

Synonyms:
Language: French

Wikipedia Abstract

American water-willow (Justicia americana) is a herbaceous, aquatic flowering plant in the Acanthus family native to North America. It is the hardiest species in the genus Justicia, the other members of which being largely tropical and subtropical, and it is able to survive as far north as USDA zone 4. It is common throughout its range.
View Wikipedia Record: Justicia americana

Attributes

Allergen Potential [1]  Low
Bloom Period [2]  Late Spring
Drought Tolerance [2]  Low
Fire Tolerance [2]  Low
Frost Free Days [2]  4 months 20 days
Fruit/Seed Abundance [2]  Medium
Fruit/Seed Begin [2]  Spring
Fruit/Seed End [2]  Fall
Growth Form [2]  Rhizomatous
Growth Period [2]  Spring
Growth Rate [2]  Rapid
Leaf Type [2]  Deciduous
Lifespan [2]  Perennial
Propagation [2]  Bare Root
Root Depth [2]  10 inches (25 cm)
Seed Spread Rate [2]  Moderate
Seed Vigor [2]  High
Seeds Per [2]  349999 / lb (771617 / kg)
Shape/Orientation [2]  Erect
Structure [3]  Herb
Vegetative Spread Rate [2]  Rapid
Flower Color [2]  White
Foliage Color [2]  Dark Green
Fruit Color [2]  Brown
Flower Conspicuous [2]  Yes
Height [2]  31 inches (0.8 m)
Hardiness Zone Minimum [2]  USDA Zone: 4 Low Temperature: -30 F° (-34.4 C°) → -20 F° (-28.9 C°)
Light Preference [2]  Mostly Shady
Soil Acidity [2]  Neutral
Soil Fertility [2]  Infertile
Water Use [2]  Moderate

Ecoregions

Name Countries Ecozone Biome Species Report Climate Land
Use
Teays - Old Ohio United States Nearctic Temperate Upland Rivers    

Protected Areas

Predators

Argyrogramma verruca (Golden Looper)[4]

Providers

External References

USDA Plant Profile

NatureServe Explorer

Citations

Attributes / relations provided by
♦ 1Derived from Allergy-Free Gardening OPALS™, Thomas Leo Ogren (2000)
♦ 2USDA Plants Database, U. S. Department of Agriculture
♦ 3Kattge, J. et al. (2011b) TRY - a global database of plant traits Global Change Biology 17:2905-2935
♦ 4HOSTS - a Database of the World's Lepidopteran Hostplants Gaden S. Robinson, Phillip R. Ackery, Ian J. Kitching, George W. Beccaloni AND Luis M. Hernández
♦ 5Robertson, C. Flowers and insects lists of visitors of four hundred and fifty three flowers. 1929. The Science Press Printing Company Lancaster, PA.
♦ 6Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0