Coffee grounds acidify your soil. Everyone says it. The research says otherwise. Spent grounds are pH 6.56.8 basically neutral. Brewing pulls the acidity into your cup. What's left behind won't lower Chamaenerion angustifolium, Fireweed Dancing Oaks Nursery and Gardens If you're looking to naturally reduce mosquitoes in your garden, plants like the ones shown hereespecially lemongrass and citronella (often sold as the citronella plant)are a great place to start. But it's Hanging Planter Branch FF14 HOUSING COLLECTION Artificial Plants in the Office: To Use or Not to Use?