Grassy Weeds - St Augustine Lawn - Jungle Rice
BES-TEX Weed ID Guide · Grassy Weeds
Jungle Rice
Echinochloa colona
Common Name
Jungle Rice
Latin Name
Echinochloa colona
Family
Poaceae
Life Cycle / Type
Summer annual · Grassy weed
What Is It?
Jungle rice is a fast-growing summer annual grassy weed with upright to spreading growth and wide, smooth leaf blades. It resembles barnyardgrass but typically has a more compact seedhead. It commonly appears in thin turf, disturbed soil, and areas with excessive moisture or fertility.
Soil Temperature & Germination
Jungle rice germinates as soils warm in late spring and summer.
Above 65°F
Germination begins
Above 75°F
Rapid emergence and growth
Decision Question
Is the jungle rice visible above the soil right now?
Why This Weed Comes Back
Missed spring or late-spring pre-emergent timing
Disturbed or bare soil
Excess moisture or high fertility
Learn the Basics
A healthy, thick lawn is the best defense against weeds.
