How to Make Plant Fertilizer


The productivity and health of a garden can be greatly effected by the fertilization it receives. However, commercial fertilizer can sometimes be expensive, and may even be unhealthy for gardeners. Weed compost tea is a natural and less expensive way to feed your garden. Plants such as stinging nettles are especially high in nitrogen. Comfrey added to your tea provides vitamin B12, which stimulates root growth and prevents transplant shock. In short, weeds can provide a wealth of nutrients to your garden.

Step 1

Save your eggshells whenever you use eggs. Set the shells aside in a dark and cool location to dry. Eggshells are high in potassium and calcium, and will be a useful addition to your homemade fertilizer.

Step 2

Dry your eggshells for a week longer once you have accumulated a dozen shells. Crush the dried eggshells into a powder.

Step 3

Remove weeds from your garden, and put them into your bucket. Dandelion, chickweed, and clover are some of the weeds that can be used. Include any grass clippings from your yard. Add stinging nettles and comfrey to your bucket if they are available in your area. Both of these plants grow wild, or you can grow them yourself. Be sure to wear gloves to protect your hands if you are picking stinging nettles or comfrey. Both of these plants can irritate the skin.

Step 4

Fill your bucket until it is half full of weeds and grass clippings. If you like, add your crushed eggshells to the bucket as well.

Step 5

Fill your bucket to the rim with water. Stir the contents immediately. Continue to stir the contents twice a week for the next three weeks.

Step 6

Water your garden until the soil is dampened right before applying your homemade plant fertilizer.

Step 7

Dilute your tea with water at a ratio of 10 parts water per 1 part tea. Use your second bucket to mix your tea. Add the tea to the bottom tenth of your bucket, and then fill the bucket with water. Once mixed, the color of the tea should be very weak.

Step 8

Apply 5 gallons or 1 bucket of your diluted tea to every 6 yards of garden area. Make sure to add your fertilizer directly to the soil so that you don't damage your plants.

Things You'll Need

  • Egg shells (optional)
  • Weeds and grass clippings
  • 2 5-gallon buckets


  • Natural Health Ezine: Homemade Plant Fertilizer Recipes
  • San Francisco Chronicle: How to Make Your Own Organic Fertilizer
  • Small Farm Permaculture and Sustainable Living: Compost Tea

Who Can Help

  • Vegetable Gardening Gnomes: Homemade Liquid Organic Fertilizer
Keywords: weed compost tea, organic fertilizer, plant fertilizer

About this Author

Based in Ann Arbor, Michigan, Robin Coe has reported on a variety of subjects for over 15 years. Coe is the former publisher of the politics and art magazine Flesh from Ashes. She has worked to protect water and air quality. Coe holds a Bachelor of Science in journalism with a double-major in international politics from Bowling Green State University.