coffee as fertilizer

Coffee – the black gold for plants

Fertilize your plants with Coffee - here is a guide

Exploring the benefits of coffee on plants reveals a myriad of advantages, from nitrogen infusion and enhanced vegetative mass production to root stimulation, soil acidification, and substrate quality improvement. Whether applied as a liquid every fortnight, integrated as grounds into the substrate, or utilized as mulch to deter snails and slugs. 

This botanical elixir has gained increased significance as an eco-friendly alternative to chemical counterparts. Chemicals, notorious for contaminating water and soil, wreak havoc on ecosystems, endangering various life forms and diminishing biodiversity. Delving into the art of incorporating coffee into plant care not only promotes environmental consciousness, but also recycles byproducts and offers very cost-efficient garden benefits.

Benefits of Coffee in Plant Care

  • Nitrogen-Rich Fertilizer: With a nitrogen-carbon ratio of 24:1, coffee stands as an indispensable source of nitrogen, vital for plant development.
  • Organic Nutrient Boost: Beyond nitrogen, coffee holds organic nutrients, contributing to its role as a natural fertilizer. 
  • Vegetative Growth Catalyst: Stimulates the production of vegetative mass. Benefits the production of green foliage and leaves.
  • Photosynthesis Partner: Integral to the photosynthesis process, benefits the creation of amino acids, sugars, lipids, and various components.
  • Benefits Flowering and Fruit Production: Elevates flowering and fructification, courtesy of its nitrogen content.
  • Stimulate Root Production: Promotes crucial root development, enhancing water and nutrient absorption.

How to Prepare Coffee as a Fertilizer

Coffee as a Liquid

Liquid coffee, prepared without additives, serves as a valuable natural fertilizer. Applied every two weeks during watering, it offers a sustainable alternative to expensive industrial fertilizers.

Coffee Grounds

Coffee grounds, the remnants of brewing, present a solid form of nourishment for plants. Integrate them into compost, reducing odors and promoting decomposition. Alternatively, sprinkle them lightly directly into the substrate, whether in soil or pots. Be aware that coffee ground may increase the risk of mould if not given the chance to dry out or lack of ventilation.

How to prepare Coffee as a Fertilizer

Understanding the benefits of coffee is incomplete without acknowledging how to use it wisely:

  • Coffee Selection: Opt for black coffee only, steering clear of instant or flavored variants.
  • Temperature Caution: Allow coffee to cool entirely before application to prevent potential harm to plants.
  • Moderation is Key: Avoid excessive use, especially for plants favoring alkaline soil.
  • Monitoring Plant Health: Discoloration of leaves signals excess coffee application, necessitating adjustments for optimal plant health.

Coffee as a Fertilizer for Cacti and Succulents

Coffee in any form is not the ideal fertilizer for most succulents, and especially cacti. Since the very high nitrogen ratio in coffee may result in elongated growth and unnatural shape. 

However, there are instances where cacti enthusiasts feed their cactus coffee frequently and have a very happy plant.

Coffee as a Natural Pest Repellent

Crushed coffee serves as an effective deterrent against garden pests like slugs and snails. Apply a layer as mulch atop the substrate for optimal impact.