When it comes to choosing an organic fertilizer, you have hundreds of options. It's quite overwhelming.
I've put together some information on the 2 most important fertilizers for your organic garden. These are great organic lawn fertilizer products, too.
The fertilizers are actually more accurately called "biostimulants" because to be technically called a fertilizer, a product needs to have a lot of nitrogen, phosphorus and potassium - much more than we even want to apply, and much more than can be obtained from most natural sources.
We're mostly more interested in broad-spectrum, natural organic fertilizers with dozens of nutrients as well as other benefits, and that's where biostimulants come in.
Sea Minerals Organic Fertilizer
I've written about sea mineral fertilizer before. I feel quite strongly that it's the most important micronutrient fertilizer for your organic garden. It's an amazing liquid organic fertilizer for vegetables.
If I could use only one fertilizer, sea fertilizer would be it.
You could get it directly from the ocean if you lived nearby an unpolluted part of the sea, but it's easier to buy an inexpensive, very concentrated product.
It's not too salty when mixed with water and it's not too polluted if it's taken from less-polluted parts of the ocean.
It contains over 80 ocean minerals and organic substances from sea water. Many gallons of ocean water are used to make a gallon of sea fertilizer.
Update: 2 1/2 years after I wrote this article, I decided to start selling sea minerals, so you can now learn a lot more about it here.
Kelp Organic Fertilizer
Kelp fertilizer contains over 70 minerals and vitamins.
Perhaps more important, it’s an excellent source of natural plant growth regulators.
This is one of the least expensive best organic fertilizer products out there. Certain varieties of kelp can be sustainably harvested because they grow as much as 2 feet per day and get well over 100 feet long.
For the best quality, kelp should be processed quickly at cool temperatures to preserve all of the benefits kelp has to offer.
In the soil, the benefit of using kelp meal and fresh kelp from the beach is that you get a huge amount of nutrients, ready to be used by plants and microbes.
Seaweed from the beach can go on the soil as a mulch layer where it will disappear quickly, or can go into the compost. Either way, there‘s no need to wash off the salt.
Kelp fertilizer is a staple in any foliar feed and is also great for starting seed. Liquid kelp fertilizer has the same nutrients as kelp meal, but we use it for its natural plant growth regulators that stimulate many processes in plants.
Although the nutrients are beneficial, at this small amount it’s really all about the hormones. They have the final say as to how your plants will grow, reproduce and die.
Update: 2 1/2 years after I wrote this article, I decided to start selling liquid seaweed, so you can now learn a lot more about it here.
So those are my 2 favorite organic fertilizers for plants. You can mix them together with water in a hose-end or backpack sprayer to apply them at the same time, or just use one of them.
Let me know below if you have anything to add, or any questions for me about these biostimulants.