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5 Common Weeds In Your Garden and How To Control Them

man pulling weeds from a garden
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Maintaining a lush, green lawn in Southern California presents a unique challenge, especially when battling stubborn, invasive weeds. A beautiful, healthy lawn doesn’t happen by accident; it requires skilled care and attention to the right lawn fertilization and maintenance routines. At Lawnscape Systems, Inc., we bring over 45 years of experience combating the specific weeds that thrive in LA, Orange, San Bernardino, Riverside, Ventura, and San Diego counties. Understanding your enemy is the first step. Here are five of the most common weeds we encounter and how professional treatment can help you take back your yard.

Identifying Your Weed Problem

Weeds compete with your grass and ornamental plants for essential water, nutrients, and sunlight, often winning because of their fast-growing and resilient nature. To effectively control them, you need a program tailored to the specific type of weed and your local climate.

1. Crabgrass (Digitaria spp.)

Crabgrass is one of the most notorious annual weeds in Southern California. It’s light green, grows in dense, unsightly clumps close to the ground, and can quickly choke out healthy turf. It thrives in hot, dry conditions and thin, stressed lawns.

  • The Lawnscape Systems, Inc. Solution: Prevention is key. Our Supreme and Weed and Feed Programs incorporate effective pre-emergent herbicides, which must be applied at the correct time in the early spring before crabgrass seeds germinate. If it’s already present, post-emergent treatments are necessary to control it before it produces thousands of new seeds for next season.

2. Broadleaf Plantain (Plantago major)

You've likely seen this one: low-growing rosettes of dark green leaves with noticeable parallel veins. Plantain tolerates compacted, poor soil remarkably well and is a major nuisance in high-traffic areas. It spreads primarily by seed but its taproot makes it tough to pull manually.

  • The Lawnscape Systems, Inc. Solution: For established Plantain, we use targeted broadleaf weed control within our lawn care programs. A spot application of a soil sterilant or herbicide is often necessary to eliminate the entire, deep root system without damaging the surrounding grass.

3. Spotted Spurge (Euphorbia maculata)

Spotted Spurge is the sneaky culprit that creates dense, mat-like patches that spread rapidly across bare soil or thin turf. Its reddish-purple stem and milky sap are distinguishing features. It is incredibly drought-tolerant, making it perfectly suited for the Inland Empire and other drier parts of our service area.

  • The Lawnscape Systems, Inc. Solution: Since it can spread so quickly, a combination of herbicides and soil sterilants is employed during our Weed Abatement services to control it on a wider scale. Consistent fertilization and aeration to promote dense, healthy turf will naturally crowd it out over time.

4. Dandelion (Taraxacum officinale)

The Dandelion is instantly recognizable with its sunny yellow flower, deeply notched leaves, and fluffy seed heads. While a classic, it's a persistent problem due to its deep taproot and ability to spread seeds effortlessly across your neighborhood.

  • The Lawnscape Systems, Inc. Solution: Manual pulling is often ineffective because any piece of the taproot left in the soil can regrow. Our targeted broadleaf weed control is designed to eliminate this deep root system entirely. This type of aggressive weed control is a cornerstone of our signature programs.

5. Common Yellow Woodsorrel (Oxalis stricta)

This weed is often mistaken for clover due to its three heart-shaped leaflets, but it produces tiny yellow flowers and seed capsules that “explode” to scatter seeds. It tends to cluster in garden beds and thin turf, especially where water is abundant.

  • The Lawnscape Systems, Inc. Solution: For turf areas, a selective post-emergent herbicide is applied. In non-turf areas, such as industrial business parks or large commercial properties, our team applies a combination of treatments to prevent its quick spread, ensuring your whole property looks immaculate.

A Personalized Approach to Weed Control

As a company that was born and bred in Los Angeles, we understand the unique pressure that hard-to-treat invading grasses and pesky weeds place on your Southern California oasis. We don’t offer a one-size-fits-all solution; our experienced team conducts a detailed lawn analysis to craft a plan specifically for your property. Whether you are battling weeds in a residential yard or managing turf for a large HOA, our programs like the Supreme Program offer comprehensive, year-round protection that goes beyond simple weed killing.

Don't let weeds diminish your lawn's health and beauty. Take the first step toward a healthier, more vibrant yard by contacting us today at (714) 909-1836.

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