How To Make Your Own Liquid Fertilizer
An easy-to-follow guide to making concentrated, organic liquid fertilizer at home using onions. Contains information about essential plant nutrients and their role.
Store-bought liquid fertilizers can be expensive, and there are so many different types on offer it can be challenging to know which one to buy.
What if there was a simple, cheap, one-size-fits-all alternative? What if making your own fertilizer was easier than making a trip to the store? Wouldn’t that be great?
Primary Nutrients Plants Need
To grow healthy and strong, all plants need three primary nutrients: nitrogen, phosphorus, and potassium.
The most important of these is nitrogen. Plants absorb more nitrogen than any other element. It is essential for photosynthesis. Without it, plants will wither and die.
Phosphorus is necessary for plants’ general health and vigor, and potassium ensures well-formed roots and strong stems.
What if you had something in your store cupboard that could provide all of these essential nutrients to all of your house and garden plants, flowers, fruit, and vegetables?
Wouldn’t that be great?
Enter the simple onion. Onion skins contain high amounts of nitrogen, phosphorus, and potassium. Not to mention other nutrients that plants love, such as calcium, iron, magnesium, and copper.
Follow the simple recipe below to create your own nutritious liquid fertilizer in three easy steps. You’ll need a plastic bottle with a lid. A 2-liter water or soda bottle will do the trick.
1. Don’t throw away the onion skins when cooking a meal. (Garlic skins can also be used). Instead, push them in through the neck of the bottle and screw the lid on tight. Store in a dark cupboard. Repeat until your bottle is thoroughly stuffed and can hold no more.
2. Fill the bottle with water up to the neck and screw the lid on tightly.
3. Store the bottle in a cool, dark place for at least two weeks.
The longer you store your fertilizer, the more potent it will become. After two weeks, it will be sufficiently concentrated.
To use, dilute one part fertilizer with ten parts water.
The best time to fertilize your plants is at the beginning of their peak growing cycle, as the plant is beginning to leaf out.
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