Using Soybean Water as a Natural Fertilizer for Healthy Garden Plants

Soybeans, playing the part of a dietary staple in many cultures, also hold a significant yet underappreciated role in the realm of gardening. If you’re looking for an easy way to give some extra nutrition to your plants, look no further than this mighty legume. Soaking some soybeans in water overnight is a simple, hands-off method that taps into the bean’s rich nutrient profile, allowing these goodies to leach out and create a fertilizer-quality liquid solution for plants, perfect for a thriving garden.

The versatile soybean, native to East Asia, is full of healthy essentials like proteins, vitamins, enzymes, and minerals. Good for humans and for plants! The soaking process helps break down and extract these nourishing elements from the bean. When soybean-enriched water is introduced to the garden, plants can access nutrients like nitrogen, potassium, and phosphorus — all found in the soybean. The nitrogen, especially, is an essential macronutrient for chlorophyll production, healthy functioning, and plant growth.

Introducing this enriched water can stimulate organic matter in the soil, which in turn enhances soil structure, aids photosynthesis, and improves nutrient availability for plants. Additionally, as the organic content in the soil increases, water retention capabilities can also improve, which is especially beneficial for soils prone to quick drainage. Over time, the soil can have naturally promoted nutrient storage and better moisture retention thanks to the soybean water.

Applying the power of soybeans

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Unlock the power of soybeans for your garden with this simple DIY soybean fertilizer! All you need is some soybeans, water, and a container for soaking. Depending on the size of your garden, you can use a bucket or even a glass for the mixture. Ideally, maintain a ratio of 1 part soybeans to every 10 parts water. Just immerse the correct proportion of soybeans in the water and allow them to steep for at least 24 hours. Once the soak is complete, you can discard or cook the beans, then water your plants with the remaining water.

Note that soybean-enriched water is not a replacement for fertilizer or plant watering. Always follow proper plant care instructions depending on what you’re growing in your garden, and ensure to “feed” your plants a balanced diet. This homemade soybean-based nutritious fertilizer is more of a treat to perk up the plant’s leaves and blooms while nourishing the soil.

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Beyond this healthy boost, the method works as an eco-friendly and cost-effective alternative to synthetic fertilizers, minimizing environmental impact and potential chemical runoff. Using soaked soybean water as a plant supplement is a sustainable method of upcycling nutrients and also recycling water. This hack gets even easier and more convenient if you’re already preparing soybeans for a meal — instead of throwing away the water after the soak, just reuse it for your garden. Less work for you, less money on expensive fertilizers, and a welcome bonus for your garden! 

Authors at GlobalIdeas
Authors at GlobalIdeas

We exist to help communities in the Asia-Pacific make practical improvements to their own health. We believe there is immense potential to join the dots across disciplines to think differently, and we are united by a desire to see better health for all.

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