Common Weeds in Lawns and Gardens: Identification and Control
Identifying Common Weeds
Weeds are unwanted plants that can invade lawns and gardens, competing with desirable plants for resources and nutrients. Identifying weeds accurately is the first step towards effective control.
Common Lawn Weeds
- Crabgrass: Low-growing, grassy weed with reddish or purplish seedheads.
- Dandelions: Perennial weeds with bright yellow flowers and deeply dissected leaves.
- Plantain plants: Broadleaf weeds with oval, ribbed leaves that form a rosette.
- Common ragweed: Tall, branching weed with deeply lobed leaves and small, greenish flowers.
- Annual bluegrass: Fine-textured, cool-season grass that forms dense tufts.
Common Garden Weeds
- Japanese knotweed: Invasive, bamboo-like plant with large, heart-shaped leaves.
- Poison sumac: Toxic shrub with white berries and bright fall foliage.
- Hedge bindweed: Vine with arrow-shaped leaves and pink or white flowers.
- Ground ivy: Creeping, mat-forming weed with clover-like leaves and a pleasant aroma.
- Purslane: Succulent with fleshy, succulent leaves and small, yellow flowers.
Controlling Weeds
Once weeds have been identified, various methods can be employed to control their spread:
Prevention
- Mulching: Applying a layer of organic material over the soil can prevent weed seeds from germinating.
- Pre-emergent herbicides: These herbicides are applied before weeds emerge to form a barrier that prevents their growth.
Mechanical Control
- Hand-pulling: Removing weeds by hand is effective for small infestations.
- Tilling: Tilling the soil can disrupt weed roots and prevent their regrowth.
- Mowing: Regular mowing can prevent weeds from going to seed and spreading.
Chemical Control
- Post-emergent herbicides: These herbicides are applied directly to weeds to kill them.
- Selective herbicides: These herbicides target specific weeds without harming desirable plants.
- Non-selective herbicides: These herbicides kill all plants they come into contact with.
Special Considerations for Poisonous Weeds
Some weeds, such as poison ivy and poison sumac, are poisonous to humans. It is important to take precautions when dealing with these plants:
- Wear protective clothing: When removing poisonous weeds, wear gloves, long sleeves, and pants to protect your skin.
- Avoid touching: Do not touch poisonous weeds with bare hands.
- Dispose of properly: Dispose of poisonous weeds in a sealed plastic bag to prevent them from spreading.
Conclusion
Identifying and controlling weeds in lawns and gardens is an ongoing task. By understanding the different types of weeds and employing effective control methods, homeowners can maintain healthy and weed-free landscapes.