USDA-NRCS PLANTS Database

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Submergents

Ceratophyllum demersum

Hornwort

Ceratophyllum demersum, Hornwort, is a native submergent plant with little or no roots anchoring it to the bottom. Instead it forms dense mats that float or are suspended in the water column that provide excellent cover for fish and young amphibians. Notably Ceratophyllum is evergreen even in the coldest of waters, sinking to the bottom and providing cover for fish thru the winter. Hornwort has stiff branching stems with whorled leaves giving it a dense appearance under water. Simply breaking off a tip or portion of the plant is all it takes to introduce it into another body of water.

Bloom Color

White

Ceratophyllum demersum Characteristics & Attributes

Exposure
• Sun
• Partial Shade
Mature Height
• < 1'
Spread Characteristics
• Stoloniferous - Rapid
Season of Interest (Flowering)
• Summer
Season of Interest (Foliage)
• Spring
• Summer
Pond Zonation
• Open Water 12" - 6'
Foliage Color
• Green
Wildlife Benefits
• Amphibians
• Cover
• Fish
• Food
• Nesting
• Waterfowl
Critter Resistance
• Deer Resistant
• Goose Resistant
Wetland Indicator Status
• OBL
Plant Type
• Submergent
Attributes
• Bio Remediation
• Mass Planting
• Native
• Naturalizing
• Oxygenator
• Storm Water Basin
USDA Hardiness Zone
• 3
• 4
• 5
• 6
• 7
• 8
• 9