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How to Manage Pests

Identification: Weed Photo Gallery

Naiads

Scientific name: Najas spp. (Waterweed Family: Hydrocharitaceae)

Life stages of Naiads top left picture bottom left picture right picture

Click on image to enlarge

DESCRIPTION:
Naiads are perennial freshwater broadleaf plants with floating or submerged leaves, or both. They grow in rice fields and other areas where standing water persists from early spring into summer. On mature plants, leaves encircle the stem in whorls of three. Leaves are very narrow, 1/100 to 1/10 inch (0.25 - 2.5 mm) wide and taper at the tips. Stems are 10 to 25 inches (25 to 62.5 cm) long and may branch at the stem joints. Tiny flowers emerge from the sheath at the base of the leaf. Plants propagate from seeds or from stems.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/WEEDS/naiads.html revised: November 17, 2008. Contact webmaster.