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Nettle Liquid Fertilizer Tea

Give your tomatoes, leeks, cucumbers, roses, and other plants supplemental feeding with nettle fertilizer tea. When working with plants, it is important to wear appropriate clothing in addition to gloves and goggles to protect your eyes and skin.

You Will Need:

  • Nettle leaves
  • 3 gallons of water
  • 1 large, flat stone
  • Qty. (2) 5-gallon buckets with lids
  • Fine mesh strainer bag, strainer, cheesecloth, or fine sieve
  • Goggles for eye protection
  • Rubber gloves for skin protection
  • pH Test Kit
  • PreGro Plant Sprayer


Get your protective gear on and place a large bunch of nettle leaves into a 5-gallon bucket. Pour in 3 gallons of water and place a large, flat stone on top of the leaves. Cover the bucket by securing the lid tightly. After two weeks, put on your protective gear again and open the bucket. You will see a foam floating at the top, which occurs as a result of the nettle leaves decomposing. Strain the extremely smelly liquid into another empty 5-gallon bucket, using a fine mesh strainer bag to separate the decomposed nettle leaves and foam from the highly concentrated liquid. All solids must be removed from your final fertilizer tea. The highly concentrated liquid must be diluted in a ratio of 1 part fertilizer tea to 10 parts water. To use with the PreGro Plant Sprayer, take 1 ounce of concentrated fertilizer tea and add 10 ounces of fresh water. Pour this 11 oz. of final fertilizer tea into the easy-to-fill glass container. Never shake the PreGro Plant Sprayer when the glass container is attached to the sprayer. The PreGro Plant Sprayer utilizes aerosol technology, but does not contain CFCs. For optimal spray, hold sprayer between a 90 degree angle and a 45 degree angle.


Important Tips:

  • Test your homemade liquid fertilizer on a single plant to make sure the solution does not have adverse effects.
  • Spray your plants in the early morning or evening, spraying the underside of the leaves and near the base of the plant.

The PreGro Plant Sprayer

Atomizes up to 18 oz., which covers up to 120 square feet.

Easy to control, this portable hand-held garden sprayer enables you to deliver a continuous and uniform spray to only those plants most affected by unwanted pests.