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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.

Yes, weeds will grow through pea gravel but you can prevent this during the installation process. Install a weed barrier underneath pea gravel and swap it out every three years to keep weeds at bay.

No, it's not really possible to completely prevent weed growth. Weeds are incredibly resilient—all they usually need is a tiny bit of dirt to sprout, so their eventual appearance is pretty much inevitable. However, you can definitely keep them at bay by getting rid of weeds as soon as you notice them. The longer you let them sit and grow roots, the more they'll spread.

Professionals employ protective measures such as covering or temporarily relocating plants, minimizing chemical usage, and carefully planning construction routes to avoid damage. These precautions preserve the integrity and appearance of the landscaping during projects.