Easy Rice Water Trick to Supercharge Fertilizing Power

Rice water has been around for ages as a sustainable water source that also nourishes certain plants. The practice goes back to ancient farming in Asia, though the exact period is debated. Farmers knew the benefits and reaped the rewards. But just because ancient cultures did it, doesn’t mean it’s the best option. Luckily, modern research supports this practice and confirms what farmers have known – rice water is great for plants. But there’s a simple trick to boost its fertilizing power even more: fermenting the rice water.

There are three types of rice water: washed, boiled, and fermented. Washed and boiled are just the leftover water from cleaning and cooking. Fermented rice water, though, is processed to bring out the beneficial nutrients in a way that’s more easily absorbed. It can then be used for all sorts of things, like beauty products and fertilizer.

While monstera plants may be an exception, you’ll want to take the time to ferment rice water for your garden plants. Rice water isn’t ideal for all plants, so start by testing your soil and seeing which ones could benefit from the nitrogen, phosphorus, and potassium (NPK) in fermented rice water. Most plants prefer the fermented version over the washed or boiled kind.

Research shows fermented rice water has up to 56% higher nutrients than unfermented. This makes it much more effective as a garden fertilizer for plants that need NPK. However, it’s slightly more acidic, so keep an eye on your soil pH before applying. Fermented rice water has increased levels of nitrogen, phosphorus, potassium, calcium, magnesium, copper, zinc, and boron. Plants grown with it see better growth and bigger, healthier leaves – especially good for leafy greens and indoor plants.

Fermenting rice water is actually pretty simple and only takes 3 days! There are a few different methods, but most people already have the tools at home. You can use a clay pot for better results, but a steel pot, bowl, or glass jar will work too.

The easiest way is to strain the rice water into a container after rinsing, then let it sit at room temp for 3-5 days. When it’s ready, it should have a slightly sour or tangy smell. Dilute it with 1 part fermented rice water and 10 parts tap water before applying. Another method is to put 1/2 cup boiled rice in a pot with 5 cups tap water, cover, and let sit 12+ hours until bubbles form and the liquid is slightly cloudy.

For either method, apply the fertilizer every 2 weeks or as needed. Use it right away, as it can’t be stored or refrigerated. You can apply it directly to the soil or spray it on the leaves.