Three Noxious Weeds
WANTED: CI TIZE N SCI EN TI S TS TO R E POR T S EA SON’ S FIR S T SIGH TI NG OF N OXI OU S WE E DS
We are tracking the emergence behavior of three noxious weeds this spring, Mugwort (Artemesia vulgaris), Japanese Stiltgrass (Microstegium viminium), and Crabgrass (Digitaria spp.). Become a Weed Watcher and help us track these weedy villains! How you can become a Weed Watcher We are interested in WHEN these weeds emerge on Long Island. When you FIRST see them in spring – Snap a photo and email it to us along with this info: • Date photo was taken • Location (physical address or GPS coordinates) • Habitat where weed was growing (lawn, landscape bed, roadside, etc.)
For more info, visit the Weed Watcher web page.
Send to Andy Senesac, [email protected] MUGWORT: Look for it Mid March through April Rhizomatous perennial, reproduces by rhizome or seed
Leaves resemble chrysanthemum
Leaves silvery on bottom, green on top
Emerges early in spring
STILTGRASS: Look for it Early April to Early May Sprawling annual grass that appears a few days before crabgrass
Leaves 2-4” long
Broad, round-bladed seedlings can be mistaken for broadleaf plant
Looks similar to crabgrass but has shorter leaves
CRABGRASS: Look for it Late April through May Summer annual grass that spreads by seed and root nodes
Tillering
Germinating near weed skeletons
We are tracking the emergence behavior of three noxious weeds this spring, Mugwort (Artemesia vulgaris), Japanese Stiltgrass (Microstegium viminium), and Crabgrass (Digitaria spp.). Become a Weed Watcher and help us track these weedy villains! How you can become a Weed Watcher We are interested in WHEN these weeds emerge on Long Island. When you FIRST see them in spring – Snap a photo and email it to us along with this info: • Date photo was taken • Location (physical address or GPS coordinates) • Habitat where weed was growing (lawn, landscape bed, roadside, etc.)
For more info, visit the Weed Watcher web page.
Send to Andy Senesac, [email protected] MUGWORT: Look for it Mid March through April Rhizomatous perennial, reproduces by rhizome or seed
Leaves resemble chrysanthemum
Leaves silvery on bottom, green on top
Emerges early in spring
STILTGRASS: Look for it Early April to Early May Sprawling annual grass that appears a few days before crabgrass
Leaves 2-4” long
Broad, round-bladed seedlings can be mistaken for broadleaf plant
Looks similar to crabgrass but has shorter leaves
CRABGRASS: Look for it Late April through May Summer annual grass that spreads by seed and root nodes
Tillering
Germinating near weed skeletons
