• Organic weed killers, such as vinegar, garlic, tomato leaf, and pepper spray can be used to tackle weeds in organic gardens. • Mulch can be used to smother weeds and prevent them from getting sunlight. Quality mulch can be purchased at a local gardening store or made from items such as compost and newspaper. • Pulling weeds by hand is an effective method of removing the entire weed plus the root. Protect fingers with gloves and use a claw or trowel to loosen soil.