Cattails Identification & Treatment
Scientific Name: Typha latifolia (broadleaf), T. angustifolia (narrowleaf), T. × glauca (hybrid) Category: Emergent Tier: 1 — High-Priority — Most prevalent and/or most damaging across the US
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Identification
Cattails are tall (3–10 feet), erect emergent plants with long, flat, sword-like leaves and distinctive brown, cylindrical flower spikes ("cattails") at the top of stiff stems. Broadleaf cattail (T. latifolia) has leaves up to 1 inch wide and a continuous flower spike. Narrowleaf cattail (T. angustifolia) has narrower leaves and a gap between the male (upper) and female (lower) flower spikes. Key distinguishing features:
- Tall, flat, sword-like leaves
- Iconic brown, cylindrical flower spike (the "cattail")
- Dense rhizome network in shallow water and saturated soil
- Broadleaf vs. narrowleaf distinguished by leaf width and flower spike gap
Commonly confused with: Bulrush (round stems, no flat leaves), common reed/Phragmites (feathery plume, not cylindrical spike), iris/sweet flag (shorter, different flower)
Treatment
Recommended Natural Waterscapes Products:
- Cattail Killer Pack — Purpose-built combination for cattail control. Cattail Killer Pack
- Glyphosate 5.4 — Apply to actively growing foliage in late summer (July–September) for best translocation to rhizomes. Glyphosate 5.4
- Clearcast (imazamox) — Systemic herbicide for emergent weeds. Clearcast
Non-chemical: Cutting cattails below the waterline during active growth can drown rhizomes by flooding the cut stems. Repeated cutting is necessary. Water level manipulation (raising water above the cut stems) improves effectiveness.
Full Profile
- Native Range: T. latifolia — native throughout North America. T. angustifolia — likely introduced from Europe. T. × glauca — hybrid of the two, aggressive.
- US Distribution: All 50 states, all EPA ecoregions. USDA Zones 2–11.
- Regulatory Status: Not federally regulated. Hybrid cattail (T. × glauca) is considered invasive in some states, particularly in the Great Lakes region and northern wetlands.
- Habitat: Shallow water margins, shorelines, ditches, wetlands, pond edges. Tolerates partial shade and a range of water depths (0–3 feet). Thrives in nutrient-enriched conditions.
- Reproduction: Aggressive rhizome spreading (vegetative). Also produces wind-dispersed seeds — a single flower spike can release 200,000+ seeds.
- Ecological Benefits: Cattails provide critically important wildlife habitat. Nesting habitat for red-winged blackbirds, marsh wrens, and other birds. Muskrat and beaver food source. Juvenile fish and amphibian habitat in root zones. Cattails filter nutrients and sediment from runoff (natural biofilter). Stabilize shorelines against erosion. In moderate stands, cattails are beneficial — management is typically needed only when they expand aggressively and exclude other species or encroach on open water.
- Seasonal Behavior: Emerge in spring, peak growth in summer, flower in mid to late summer. Leaves die back in fall in northern climates. Rhizomes survive winter and resprout. Dead stalks persist through winter.
Sources: Texas A&M AquaPlant – Cattails | USDA PLANTS Database
Related Species
- Phragmites (Common Reed) (Phragmites australis subsp. australis (invasive) vs. P. australis subsp. americanus (native)) — Emergent, Tier 1
- Creeping Water Primrose (Ludwigia spp. (L. peploides, L. grandiflora, L. repens)) — Emergent, Tier 1
- Dollar Weed (Pennywort) (Hydrocotyle spp. (H. umbellata, H. ranunculoides, H. verticillata)) — Emergent, Tier 2
- Alligator Weed (Alternanthera philoxeroides) — Emergent, Tier 2
- Flowering Rush (Butomus umbellatus) — Emergent, Tier 3
- Purple Loosestrife (Lythrum salicaria) — Emergent, Tier 3
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