Canada

Large crabgrass (hairy crabgrass, hairy finger-grass, crab finger grass, purple)

Digitaria sanguinalis

Large crabgrass is a widely distributed summer annual grass that germinates throughout the summer. However, new seedlings may begin to appear as early as February.
Habitat. Crop fields, orchards, vineyards, gardens, landscaped areas, turf, nurseries, pastures, roadsides, ditches, and other disturbed places.
Mature plant. Plants grow in clumps to about 2-1/2 feet (80 cm) tall, mostly upright, but sometimes prostrate. Stems are flat in cross-section, often purplish, and usually branched at the base. Leaves are flat, rolled in the bud and have a prominent midvein. It can be distinguished from smooth crabgrass, D. ischaemum, by its longer, narrower leaf, and presence of long stiff hairs on the sheath and on the upper and lower leaf surfaces. Leaves are about 1-1/4 to 8 inches (3–20 cm) long. In California smooth crabgrass is most often found in turfgrass whereas large crabgrass is more often found in gardens and landscaped areas. 
Flowers. Flowering takes place from June through October. Flowers cluster along 3 to 7 slender, fingerlike branches that are located toward the end of the flowering stem. Although similar in appearance to the flower head of bermudagrass, Cynodon dactylon, the spikelike flower branches of large crabgrass arise separately from the stem; those of bermudagrass radiate from the same point. Spikelets are lance to egg shaped, and mostly less than 1/10 of an inch (about 3 mm) long.

Pesticides
Alion
intensity: ★★★
Buctril M
intensity: ★★★
Cheminova Glyphosate
intensity: ★★★
Cheminova Glyphosate II
intensity: ★★★
Clearout 41 Plus
intensity: ★★★
Compas 480 EC
intensity: ★★★
Converge Flexx
intensity: ★★★
Credit Plus
intensity: ★★★
Depose
intensity: ★★★
Devrinol 10-G
intensity: ★★★
Durango
intensity: ★★★
Focus
intensity: ★★★
GF-2018
intensity: ★★★
GF-772
intensity: ★★★
Glyfos Bio
intensity: ★★★
Glyfos Bio 450
intensity: ★★★
Glyfos Soluble Concentrate
intensity: ★★★
Glyfos Soluble Concentrate II
intensity: ★★★
Glyphos AU Soluble Concentrate
intensity: ★★★
Glyphosate 480
intensity: ★★★
Glyphosate-Trimesium 480
intensity: ★★★
Indaziflam 200 SC
intensity: ★★★
Indaziflam 500 SC
intensity: ★★★
Maverick II
intensity: ★★★
MON 76429 Liquid
intensity: ★★★
MON 76431 Liquid
intensity: ★★★
MON 76669 Liquid
intensity: ★★★
MON 78027
intensity: ★★★
MON 79791 Liquid
intensity: ★★★
MON 79828 Liquid
intensity: ★★★
Powermax Liquid
intensity: ★★★
R/T 540 Liquid
intensity: ★★★
Renegade HC Liquid
intensity: ★★★
Roundup Transorb HC Liquid
intensity: ★★★
Roundup Transorb Liquid
intensity: ★★★
Roundup Transorb Max Liquid
intensity: ★★★
Roundup Ultra 2 Liquid
intensity: ★★★
Roundup Ultra Liquid
intensity: ★★★
Roundup WeatherMAX With Transorb 2 Technology Liquid
intensity: ★★★
SC547
intensity: ★★★
StartUp
intensity: ★★★
Sync
intensity: ★★★
Touchdown 480 Liquid
intensity: ★★★
Vios G3
intensity: ★★★
VisionMAX
intensity: ★★★
XtendiMax with VaporGrip Technology
intensity: ★★★
Devrinol 2-XT
intensity: ★★
Devrinol 50-DF
intensity: ★★
Tribute Solo 32DF
intensity: ★★
Elim EP 25
intensity: ★
Elim SG Toss-N-Go
intensity: ★
Engarde
intensity: ★
Pursuit Herbicide for Soybeans
intensity: ★
Armezon Pro
intensity: N/A
Axiom DF 68 Water Dispersible Granular
intensity: N/A
Crush'R 480
intensity: N/A
Crush'R Plus
intensity: N/A
Define DF
intensity: N/A
Dycleer Agricultural
intensity: N/A
Engenia
intensity: N/A
Fexapan Plus Vaporgrip Technology
intensity: N/A
Flaxmax Herbicide Component of Tank Mix
intensity: N/A
Flufenacet 60 Water Dispersible Granular
intensity: N/A
Frontier Max
intensity: N/A
Impact
intensity: N/A
Integrity
intensity: N/A
M1691
intensity: N/A
Odyssey NXT
intensity: N/A
Odyssey Ultra B
intensity: N/A
Odyssey Ultra NXT A
intensity: N/A
Odyssey Ultra NXT B
intensity: N/A
Optill
intensity: N/A
Option 35 DF
intensity: N/A
Pursuit
intensity: N/A
Sencor 480 F
intensity: N/A
Sencor 75 DF
intensity: N/A
Sencor Solupak
intensity: N/A
Torpedo
intensity: N/A