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Johnsongrass and crabgrass are invasive weeds that can overtake your lawn. Crabgrass is a low-growing grass most often seen in lawns, flower beds, and vegetable gardens. While you may find Johnsongrass growing in your lawn, it will also grow in pastures, crop fields, and the edge of the road. Johnsongrass is much coarser than crabgrass. If left alone, Johnsongrass can grow up to 8 feet tall. 

There are organic herbicide options that will kill grass but not flowers, including white vinegar or a dish soap solution. Commercial selective herbicides can also target grass over other plants, but read the instructions carefully to avoid damaging your garden. Herbicides that kill grass but not flowers usually include ingredients like clethodim and sethoxydim. Otherwise, your best bet will be to weed by hand.

If possible, you should prioritize pulling weeds up by hand. However, be sure not to use your bare hands, as many weeds are sharp or otherwise irritating when they come in contact with skin. Always don thick, protective gardening gloves to protect your hands when you pull up weeds.

Like sugar, the common household staple baking soda has uses in the yard. Baking soda boosts your plants to resist pests, fungal growth, and more. So, baking soda is good for your plants in certain instances, but exercise caution, as using too much could kill your plants. It’s great for hunting for pesky weeds, but not great for tending to a sensitive garden.