MowYourOwn
Weed guide

Every weed that shows up in a collar-county lawn

Each one gets a straight difficulty rating, the cultural fix, the eco product, and a reference panel showing what the truck would spray and why we do not.

Easy: pull it or rake it

Crabgrass
Digitaria

The summer invader. Sprouts from seed once soil hits 55 F, sprawls flat in a star shape, and dies at first frost leaving a bare spot that reseeds itself.

grassyannual
Dandelion
Taraxacum officinale

Deep taproot, yellow flower, puffball seed head. The easiest weed to fix by hand and the one most people spray for.

broadleafperennial
Broadleaf plantain
Plantago major

Oval leaves in a flat rosette with a tall skinny seed spike. The signature weed of compacted soil along paths and play areas.

broadleafperennial
Buckhorn plantain
Plantago lanceolata

The narrow-leaf cousin of broadleaf plantain, with a cone-shaped seed head on a wiry stalk that pops right back up after mowing.

broadleafperennial
Common chickweed
Stellaria media

A low, bright-green mat with tiny white star flowers that shows up in March and dies in June heat. Shallow roots, pulls up like a rug.

broadleafwinter-annual
Henbit
Lamium amplexicaule

The purple haze in April lawns and fields. Square stems, scalloped leaves clasping the stem, pink-purple tube flowers. Gone by June.

broadleafwinter-annual
Purslane
Portulaca oleracea

A succulent mat with reddish stems and paddle leaves that shows up in hot, bare, dry soil in July. Edible, actually.

broadleafannual
Spotted spurge
Euphorbia maculata

A flat, dense mat of tiny leaves with a red spot in the center, spreading from a single taproot along hot sidewalks and driveway edges.

broadleafannual
Black medic
Medicago lupulina

Clover's skinny cousin with tiny yellow flower balls and black seed pods. It is a legume, so like clover it shows up where nitrogen is low.

broadleafannual
Prostrate knotweed
Polygonum aviculare

A wiry, blue-green mat with small oval leaves that grows where the ground is beaten hard: along driveways, paths, and the kids' goal mouth.

broadleafannual
Foxtail
Setaria

A summer annual grass with a bushy, bristly seed head like a fox's tail. The seed heads can lodge in dogs' paws and ears.

grassyannual

Medium: iron and patience

Hard: manage, maybe not eliminate

Chicago lawn weeds: identify and fix without the chemistry · MowYourOwn