coffee grounds being sprinkled around base of rose bush at dusk

The Secret’s in the Grounds: Why Savvy Gardeners Are Adding Coffee to Their Nighttime Routine

American gardens have an interesting occurrence at night. Coffee grounds are being used as a soil and ecosystem enhancer, especially for songbirds. Master gardeners have begun an interesting practice. To improve soil, gardeners will bury coffee grounds in their soil at night.

The Critique of the Grounds

Coffee roaster cylinder roasting and mixing coffee beans
Image Credit: Depositphotos

Garden soil composition can be improved by using coffee grounds because they contain nitrogen. Although many gardeners think that adding the coffee grounds directly into the compost bin is the only option, this new nighttime application method has many advantages.

Save this article for later so you don't lose it. Enter your email and I'll send it to you now—plus you'll get my favorite backyard birding tips delivered to your inbox.

I think I have seen this technique applied. The soil starts to break down naturally overnight because soil organisms are most active, so the ground is most likely going to be breaking down the soil. It also creates an environment that attracts birds in the morning when they are feeding.

A Bird-Friendly Buffet

Here’s what’s good. Burying coffee grounds in the soil attracts insects, and insects are a food source for ground foraging birds, so you’re preparing a buffet for birds in the morning!

Here’s how this works. The soil organisms, including earthworms, are attracted to wafting coffee aromas. When organisms break down the organic material, they will go higher in the soil because soil organisms are easier for the “feeding” birds to access. This helps the birds and the soil too.

The Timing Technique

What are some advantages of picking night time? This time has many strategic benefits.

Get our free Hummingbird Attraction Guide! Plus, we'll send you our best tips for attracting more birds to your yard.

Staying dry and kept in dark areas helps ground moisture and nitrogen stay in and disrupt the breakdown cycle of the grounds, while too much of lights increases the loss of nitrogen through evaporative processes. Nighttime temperatures help moisture stay in and help break down the grounds.

Creating buried feeding stations in your garden can promote bird feeding stations. If they are set in a pattern around a central plant or feature and are filled with bird food, they will draw birds in every morning. Over time, birds will learn to visit your garden.

Beyond the Birds

Coffee grounds can attract birds when used at night, but that is one of the many benefits of this practice. It also:

  • Loamy Soil Creation: Better Moisture Retention Against Untreated Soil
  • Create a flourishing ecosystem of helpful soil organisms like insects and worms.
  • Reduce the need for chemical fertilizers
  • Support native plant growth
  • Minimize waste by repurposing used coffee grounds

As coffee grounds break down and decay, the level of acidity decreases. The slight acidity present in coffee grounds can help plants by keeping the soil pH at an ideal level for many garden plants.

Making the Most of the Space Available

Coffee Beans
Image Credit: Depositphotos

If gardeners want to incorporate this practice, there are some important considerations. Barriers that prevent water from reaching plant roots will be created if thick layers of coffee grounds are used. To prevent this, coffee grounds should be lightly sprinkled and mixed within the top few inches of soil.

You can start with small amounts in different areas of your garden. This way you can observe which birds visit which areas and how the plants respond. From there, you can adjust your application methods.

A Sustainable Circle

The great thing about this activity is that it meets all the criteria for sustainable gardening! You are making the garden more attractive to birds while also participating in a wonderful cycle of renewal. While our coffee helps us to get through the day, it also helps our gardens and the critters that live there!

Burying coffee grounds at night shows how some people are noticing coffee ground gardening. It shows how some of the greatest gardening skills can come from basic and natural ways of doing things, no matter how weird the methods may seem.

Using coffee grounds is great for your garden and for the ecosystem, as it will attract birds to your garden. It provides the opportunity to practice gardening patience, which is doing just as you would do when brewing coffee. Over time, the rich results will naturally develop and benefit the entire garden.