Ditch The Store-Bought Fertilizer: There's A Natural Way To Enrich Carrots

Technically, carrots don't need a lot of fertilizer to grow, but they can benefit from a low-nitrogen fertilizer with high potassium, especially if your soil test suggest a lack of nutrients. Still, home gardeners purchase various types of liquid, foliar, and dry fertilizer to apply to their vegetable gardens. The costs of these fertilizers can easily negate the cost-saving benefits of growing your carrots at home. Instead of wasting your money on store-bought fertilizers, take a few minutes to save your leftover rice water to enrich your carrots.

Carrots are just one of the many garden vegetables that thrive from a little rice water, especially if you choose to use fermented rice water. Root vegetables, and carrots in particular, benefit from a hormone found in fermented rice water called indole-3-acetic acid (IAA), which has been proven to stimulate root growth, leading to larger, healthier carrots. Carrots also benefit from products that stimulate microbial activity in the soil, which is another benefit of using fermented rice water as a natural fertilizer.

One of the most important things to consider when adding any fertilizer to your plants, natural or store-bought, is plant health. Regardless what type of rice water you use to fertilize your carrot plants, you'll want to make sure your application doesn't harm your plants. Start by performing a soil test. It is best to test the soil before you plant to make sure the soil conditions can support carrot growth.

Carrots don't need a lot of nitrogen, but they do need phosphorus and potassium. In addition, you will want to take note of the soil pH. Carrots produce higher yields when pH is slightly lower than 7.0; however, they can still grow in soil with a pH between 5.5 and 7.0. While washed rice water will not impact the soil pH significantly, fermented rice water can reduce pH, making the soil more acidic. Overall, the additional nutrients are considered mild enough to support root development without shocking the plants, as long as the rice water is properly diluted. Never use rice water from salted rice, as it will harm the roots more than it will help.

All you need to do to make use of this natural fertilizer is to save your leftover rice water after rinsing. That being said, fermenting your rice water is one simple tip that boosts the fertilizing power of rice water. To ferment your rice water, store rinsed or boiled rice water in a clean sealable container, such as a mason jar, for at least three days at room temperature. For either type, make sure to start by using a diluted solution and take note of how your plants respond after each application. 

To apply rice water to carrot plants, you can use a method is called drenching. Essentially, you will replace one regular watering with rice water every one to two weeks. If you are using fermented rice water, dilute it into a solution of 1 part rice water and 10 parts water before applying. Alternatively, you can mist the greens with rice water, but this application is best if you are interested in promoting leafy growth for harvesting carrot greens rather than promoting root growth.