Fertilizing your plants can be messy and time-consuming. However liquid plant fertilizers are easy to use, with very little mess, and homemade liquid fertilizers are not difficult to make. There are several liquid fertilizers available, although not all are organic. Each one has different advantages and/or drawbacks, so it is important to determine which type will produce the desired results.
Fish emulsion is a concentrated liquid fertilizer best used as a foliar spray, applied directly onto plant leaves for a quick boost. It can be acquired as a natural organic fertilizer, although amended types are also available that contain synthetic additives. Fish emulsion is high in potassium and contains many micronutrients and trace elements that plants need to grow and thrive.
Kelp Meal Tea
Kelp, or seaweed, is a bioactivator (it activates microbes in soil to help break down organic matter, making nutrients available to plants), in addition to containing macro-organisms and microorganisms and trace elements that plants need. Kelp meal tea is made by stirring some kelp meal into a gallon of water, to water plants with or to use as a foliar spray for stressed plants. Worms do not like kelp so do not use in vermiculture or planting beds where worms are abundant.
Compost tea is an excellent all-around liquid fertilizer. It is high in nitrogen and contains many other nutrients that plants need. To make compost tea, put one quart of compost into a cloth bag and steep in a gallon of warm water for several days. Use the liquid to fertilize new seedlings started indoors or to make fertilizer applications throughout the season in the garden.
Compost Worm Tea
Worm compost tea is made in a similar fashion to compost tea. Place two handfuls of worm castings in an old sock or nylon stocking. Soak in a 5-gallon bucket of water with 2 tbsp. of molasses or corn syrup for 24 hours. Stir frequently to aerate the water and increase microorganism activity. Dilute1/4 cup of this high nitrogen liquid fertilizer with one gallon of non-chlorinated water and give your plants a boost.
Simple Worm Tea
Worm tea is rich in nutrients that plants need to grow. It is made from the liquid that seeps from a worm compost bin. In this form it is very concentrated and should be diluted with an equal amount of water before use. Worm compost tea can be used to fertilize new seedlings, existing garden beds and container plants.