smooth crabgrass

Thân thiện

A gardener pulls smooth crabgrass from a flower bed.

Definition

Noun: 1. A common lawn weed: "Smooth crabgrass" is the common name for a specific, low-growing, annual grass (Digitaria ischaemum) that is considered a problematic weed in lawns and gardens. It spreads quickly, forming dense mats that crowd out desirable turf grasses.

Examples of Usage

• Noun:
  • The hot, dry weather has allowed smooth crabgrass to take over the thin areas of the lawn.
  • To prevent smooth crabgrass, apply a pre-emergent herbicide in the early spring.
  • The key to identifying it is the smooth, hairless stems, unlike its relative, hairy crabgrass.

Advanced Usage

• As a botanical specimen: In a botanical or horticultural context, "smooth crabgrass" is used to precisely identify the species within the genus .
  • The specimen was confirmed to be Digitaria ischaemum, commonly known as smooth crabgrass.

Variants and Related Words

• Crabgrass (n): The general common name for weedy grasses in the genus, which includes both smooth and hairy species.
• Digitaria ischaemum (n): The formal botanical (Latin) name for smooth crabgrass.
• Annual grass (n): A descriptive term classifying its life cycle (it completes its life cycle in one year).

Synonyms

• Weed: A general term for any unwanted plant.
• Lawn pest: A descriptive term highlighting its status as a nuisance in cultivated grass.

Related Phrases

• To control smooth crabgrass: Refers to the act of managing or eliminating this weed.
  • Proper mowing height is essential to control smooth crabgrass.
• Smooth crabgrass infestation: Describes a situation where this weed is present in large, problematic numbers.
  • The entire park is suffering from a severe smooth crabgrass infestation.

Học thuật

Noun

1. a weed

Từ đồng nghĩa

• digitaria ischaemum