Plantae > Tracheophyta > Liliopsida > Poales > Juncaceae > Juncus > Juncus validus

Juncus validus (roundhead rush)

Synonyms: Juncus crassifolius (homotypic); Juncus platycephalus; Juncus validus var. validus

Attributes

Allergen Potential [1]  Medium-High
Screening - Summer [2]  Dense
Screening - Winter [2]  Porous
Bloom Period [2]  Mid Summer
Drought Tolerance [2]  Low
Fire Tolerance [2]  High
Frost Free Days [2]  5 months 15 days
Fruit/Seed Abundance [2]  High
Fruit/Seed Begin [2]  Summer
Fruit/Seed End [2]  Fall
Growth Form [2]  Bunch
Growth Period [2]  Spring, Summer, Fall
Growth Rate [2]  Moderate
Leaf Type [3]  Evergreen
Lifespan [2]  Perennial
Propagation [2]  Bare Root, Seed, Sprig
Regrowth Rate [2]  Slow
Root Depth [2]  10 inches (25 cm)
Seed Spread Rate [2]  Moderate
Seed Vigor [2]  Medium
Shape/Orientation [2]  Erect
Structure [3]  Grass
Vegetative Spread Rate [2]  None
Flower Color [2]  Green
Foliage Color [2]  Green
Fruit Color [2]  Brown
Height [2]  39 inches (1 m)
Hardiness Zone Minimum [2]  USDA Zone: 6 Low Temperature: -10 F° (-23.3 C°) → 0 F° (-17.8 C°)
Light Preference [2]  Mixed Sun/Shade
Soil Acidity [2]  Moderate Acid
Soil Fertility [2]  Infertile
Water Use [2]  High

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Central Gulf Coastal Plain Biosphere Reserve 40530 United States  
Felsenthal National Wildlife Refuge VI 66133 Arkansas, United States
Horseshoe Bend National Military Park V 1926 Alabama, United States
Shiloh National Military Park III 4061 Tennessee, United States

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
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