You were probably just trying to do something nice for your plants by giving them a fresh pot of soil, only to find a tiny army of ants staring back at you. Talk about a buzzkill! If you’ve discovered ants in your potting mix, don’t panic. Here is everything you need to know about why they’re there and how to send them packing.
What helps get rid of ants in potting soil?
Ants are actually pretty picky about smells. They absolutely hate plants with strong essential oils because the scent overwhelms them. Herbs like peppermint, chervil, thyme, marjoram, and lavender are your best friends here. If you plant these alongside your main plant in a large container, the ants will usually decide the neighborhood has gone downhill and move out on their own.
Can I use baking soda to get rid of ants in a bag of soil?
It’s a classic tip, but honestly? It’s pretty brutal. Mixing baking soda or sodium bicarbonate with powdered sugar creates a bait that kills ants quite painfully. Beyond the ethics, it can actually be bad for your plants. Baking soda changes the pH level of the soil, making it more alkaline. This is bad news for “acid-loving” plants like azaleas, rhododendrons, hydrangeas, or camellias. I’d skip this method if you want to keep your soil healthy.
What other home remedies work for ants in potting soil?
If you want to be eco-friendly, try these scent-based deterrents:
- Essential oils
- Vinegar
- Lemon juice
Soak a rag in one of these liquids and lay it on top of the soil. Ants are super sensitive to these smells and will likely clear out. Just a heads-up: make sure aggressive liquids like vinegar or lemon juice don’t actually touch the plant itself, as the acidity can cause more damage than the ants ever would!
Another pro tip? Sprinkle some cinnamon along their “ant trails.” It works like a charm and is perfectly safe for most plants.
Can I use water to flush ants out of the soil?
You can definitely try to “flood” them out of your planters. Give the plant a very thorough soaking with a watering can or hose. This collapses their tunnels and forces the colony to evacuate. However, be careful! Not every plant likes a swamp, and you must ensure the pot has good drainage to avoid root rot. Most plants hate “wet feet” just as much as ants hate floods.
Are ants in the soil actually harmful to my plants?
In a big garden, ants can actually be helpful because they aerate the soil. But in the confined space of a container or pot, they’re trouble. As they dig, they can actually separate the roots from the soil. When the roots aren’t making contact with the dirt, the plant can’t take up nutrients or water properly. You might see your plant wilting or stopping growth even if you’re watering and fertilizing perfectly.
Quick Tip: Ants rarely travel alone
If you see ants, keep a close eye out for aphids. These two have a total “you scratch my back, I’ll scratch yours” relationship. Ants actually protect aphids from predators because they love to eat the sugary “honeydew” that aphids secrete. If you have both, you’ve got a double whammy: the aphids ruin the leaves while the ants mess with the roots. Tackle both at once to keep your garden happy!