Identifying Common Lawn Weeds and How to Get Rid of Them

Why Weed Identification Matters

Reaching for a weed control product before knowing what weed is actually in the lawn is one of the most common and costly mistakes homeowners make. Different weeds require different herbicides, different timing, and different application methods. A product that eliminates dandelions may do nothing for crabgrass. A pre-emergent that stops crabgrass will not touch an already-established broadleaf weed.

Getting the identification right first saves time, money, and frustration. It also helps avoid applying products unnecessarily in areas where a better cultural approach, such as improving turf density or adjusting mowing height, may be the more effective long-term solution.

This guide covers the most common lawn weeds found in Mid-Atlantic lawns, how to identify each one, and which products from The Mill address them most effectively.

Understanding Weed Categories

Before diving into specific weeds, it helps to understand the two broad categories that determine how and when to treat them.

Grassy weeds look similar to desirable turfgrass. They have narrow blades, parallel leaf veins, and grow in a way that can make them difficult to distinguish from the surrounding lawn until they become established. Crabgrass and goosegrass are the most common examples in this region.

Broadleaf weeds have wider leaves with a branching vein structure that is visually distinct from grass. Dandelion, clover, plantain, chickweed, wild violet, and ground ivy all fall into this category. They are generally easier to identify at a glance and respond well to selective broadleaf herbicides.

Timing also matters. Pre-emergent herbicides prevent weed seeds from germinating and are applied before weeds appear. Post-emergent herbicides are applied after weeds have already emerged and are actively growing. Using the wrong type for the situation produces poor results regardless of product quality.

Common Grassy Weeds

Crabgrass

Crabgrass is the most prevalent summer annual grassy weed in Mid-Atlantic lawns. It germinates when soil temperatures consistently reach 55 degrees in spring and grows rapidly through summer, spreading outward in a low, crab-like pattern with wide, flat blades. Because it is an annual, it dies with the first hard frost, but not before dropping thousands of seeds that will germinate again the following spring.

How to control it: Pre-emergent herbicides are the most effective approach. Applying a product containing Dimension (dithiopyr) or Prodiamine in early spring, before soil temperatures reach the germination threshold, prevents seeds from establishing. The Mill's 18-0-4 with Prodiamine and 16-0-5 with Dimension are both weed-and-feed options that handle pre-emergent control and fertilization in a single application.

For crabgrass that has already emerged, options are more limited. Post-emergent control of crabgrass is most effective when plants are young and small. Once crabgrass matures and begins to tiller, control becomes significantly more difficult.

Goosegrass

Goosegrass is often mistaken for crabgrass but germinates later in the season, typically when soil temperatures reach 60 degrees or higher. It has a distinctive white or silver center stem and grows in a flat, star-shaped rosette. Goosegrass is commonly found in compacted areas of the lawn, particularly along driveways, paths, and high-traffic zones.

How to control it: Pre-emergent herbicides with Dimension provide some control of goosegrass, though timing and rate are important since goosegrass germinates later than crabgrass. Addressing soil compaction through core aeration is one of the most effective long-term strategies for reducing goosegrass pressure since it thrives in conditions where desirable turf cannot compete.

Common Broadleaf Weeds

Dandelion

Dandelion is one of the easiest weeds to identify and one of the most persistent. Its deeply toothed leaves form a flat rosette at ground level, and its bright yellow flowers are followed by the familiar white seed heads that spread seed widely. Dandelion is a perennial with a deep taproot that regrows from the root if the top is removed without proper treatment.

How to control it: Post-emergent broadleaf herbicides applied when dandelions are actively growing in spring or fall are the most effective approach. Strike 3 Herbicide is a three-way liquid formula containing 2,4-D, MCPP, and Dicamba that provides systemic control, killing the weed from shoots to roots. For a granular option that combines feeding and weed control in one step, the 25-0-5 Trimec Weed 'n Feed is a reliable choice applied to dew-covered foliage for best contact.

Clover

White clover is identifiable by its three-leaflet compound leaves, often with a light chevron marking, and small white rounded flower heads. It fixes nitrogen from the air into the soil, which is why it tends to thrive in areas where lawn fertility is low. Its presence is often a sign that the lawn could benefit from a soil test and updated fertilizer program.

How to control it: Clover is a broadleaf weed but can be more resistant to standard three-way herbicides than weeds like dandelion. T-Zone SE is a concentrated liquid broadleaf herbicide that includes Triclopyr, Dicamba, and Sulfentrazone and is formulated to handle tougher broadleaf weeds including clover, wild violet, and ground ivy. For best results, apply twice 30 days apart during active growth.

Wild Violet

Wild violet is one of the most difficult broadleaf weeds to control in Mid-Atlantic lawns. It has distinctive heart-shaped leaves with scalloped edges and produces small purple, white, or bicolor flowers in spring. Its waxy leaf surface makes it resistant to many standard broadleaf herbicides, and its rhizomatous root system allows it to spread aggressively through shaded, moist areas of the lawn.

How to control it: Standard three-way broadleaf herbicides often deliver inconsistent results on wild violet. T-Zone SE is specifically formulated for tough-to-control weeds like wild violet and ground ivy and is one of the most effective options available for homeowners dealing with persistent violet populations. Multiple applications made 30 days apart during the active spring and fall growth periods produce the best long-term results.

Ground Ivy (Creeping Charlie)

Ground ivy, commonly called Creeping Charlie, is a low-growing perennial that spreads aggressively by creeping stems that root at the nodes. Its leaves are round with scalloped edges and have a distinctive minty aroma when crushed. It tends to take hold in shaded, moist areas where turfgrass is thin and struggles to compete. Once established, it can spread across large sections of lawn quickly.

How to control it: Ground ivy is another tough broadleaf weed that resists standard herbicide applications. T-Zone SE with its Triclopyr component is among the most effective treatments available and should be applied in fall when ground ivy is actively translocating nutrients to its root system, which improves herbicide uptake and systemic activity. Two applications 30 days apart improve results significantly.

Plantain (Broadleaf and Narrowleaf)

Plantain is a common perennial broadleaf weed that appears in compacted or thin areas of the lawn. Broadleaf plantain has wide, oval leaves with prominent parallel veins and a fibrous rosette growth habit. Narrowleaf plantain has longer, more slender leaves with a similar vein structure. Both produce tall seed stalks that spread prolifically if left unmanaged.

How to control it: Plantain responds well to standard post-emergent broadleaf herbicides. Strike 3 Herbicide and the 25-0-5 Trimec Weed 'n Feed both list plantain on their control spectrum. Addressing soil compaction in affected areas through aeration helps prevent it from returning, as plantain thrives where turf is thin and soil is compacted.

Chickweed

Common chickweed is a cool-season annual weed that germinates in fall and overwinters as a low-growing mat of small, oval leaves with a single line of fine hairs along the stem. It blooms with tiny white star-shaped flowers in early spring and produces seed before dying out as temperatures rise. It tends to appear in shaded or moist areas where grass is thin.

How to control it: Because chickweed is a cool-season annual, pre-emergent herbicides applied in late summer or early fall can prevent it from establishing. For existing chickweed, post-emergent broadleaf herbicides including Strike 3 and T-Zone SE both provide effective control when applied during active growth in late winter or early spring before seed set occurs.

Nutsedge

Nutsedge is often mistaken for grass but is actually a sedge, identifiable by its triangular stem cross-section, bright lime-green color, and tendency to grow noticeably faster than surrounding turfgrass. Yellow nutsedge is the most common variety in this region and thrives in wet, poorly drained areas. It spreads aggressively through underground tubers called nutlets that are difficult to eliminate.

How to control it: Standard broadleaf herbicides do not control nutsedge. It requires a product specifically labeled for sedge control. For persistent nutsedge problems, addressing the underlying drainage issue is as important as any chemical treatment, as nutsedge consistently returns to wet, compacted areas where conditions favor it over desirable turfgrass.

A Note on Low-Impact Options

For homeowners who prefer to minimize synthetic chemical use, FireHawk Bioherbicide is a contact bioherbicide that provides rapid suppression of weeds within 1 to 3 hours of application. It is pet-friendly, supports soil health, and carries no withholding period after application, making it a practical option for areas near vegetable gardens, water features, or high-traffic spaces. As a contact herbicide, it is most effective on young, actively growing weeds and may require repeat applications on established perennial weeds.

The Best Long-Term Weed Control Strategy

Products address the symptoms of a weed problem. A dense, healthy lawn is what prevents it from returning. Weeds establish most easily in thin, stressed, or poorly maintained turf where bare soil and weak grass cannot compete with incoming weed seeds.

The most effective long-term approach combines targeted herbicide applications with the cultural practices that build a stronger lawn:

• Mow at the correct height for the grass type, removing no more than one-third of the blade at each cutting
• Fertilize on a consistent schedule to maintain turf density and vigor
• Water deeply and infrequently to encourage deep root development
• Core aerate annually to reduce compaction and improve soil structure
• Overseed thin or bare areas in fall so desirable grass fills in before weeds can

For more detail on herbicide types, timing, and a comprehensive approach to weed management, The Mill's existing Weed Control in Your Lawn guide is a thorough resource that complements this identification guide.

Find the Right Weed Control at The Mill

The Mill carries a full selection of pre-emergent and post-emergent herbicides, weed-and-feed combinations, and organic options to address every common lawn weed situation. Browse the complete Lawn Weed and Disease Control collection at themillstores.com or visit any local The Mill store for a product recommendation tailored to the specific weeds and lawn conditions at hand.

• T-Zone SE Broadleaf Herbicide - tough broadleaf weeds including wild violet, ground ivy, and clover
• Strike 3 Herbicide - broad-spectrum broadleaf control including dandelion, plantain, chickweed, and more
• 25-0-5 Trimec Weed 'n Feed - granular weed and feed for broadleaf control with mid-season nitrogen
• 0-0-7 LockUp - granular post-emergent broadleaf control without nitrogen
• 16-0-5 with Dimension - pre-emergent crabgrass and annual weed prevention with fertilizer
• 18-0-4 with Prodiamine - professional-grade pre-emergent with slow-release nitrogen
• FireHawk Bioherbicide - fast-acting contact bioherbicide