Ants in Flower Pots - What Helps?

Dealing with Ants in Flower Pots

Ant infestations in flower pots, especially those containing non-hardy plants that need to be brought indoors for winter, can be a recurring problem for gardeners.

Common but Often Ineffective Methods:

• Coffee grounds: While sometimes suggested, coffee grounds have shown limited effectiveness in deterring ants and can primarily act as a fertilizer.
• Neem oil: Pouring neem oil into ant entrances can be effective for nests in unplanted areas, but sourcing the product quickly can be a challenge.
• Salt or baking soda: Scattering salt or baking soda near ant trails or nest entrances may work in barren areas, but it is not a viable option for flower pots if the plant is to survive.
• Submerging pots in water: Repeatedly submerging pots in water can harm certain plant species, as demonstrated by the loss of an alpine plant.

Chemical and Natural Solutions:

When other methods fail, chemical solutions are often considered. Ant bait stations have been used with success, although the process can be slow.

More recently, a scattering or liquid repellent containing natural pyrethroids was tested. This product can be carefully introduced into ant pathways with watering. Its application in the soil is designed to pose no danger to beneficial insects like bees and beetles.

Early results indicate that this product dissolves well in water and acts quickly. The treated plants do not appear to be negatively affected. This approach may offer a solution for managing ant problems in pots, planters, and potentially on patios or pathways.