You need good quality soil, enough sunshine, adequate watering and fertilizer in growing organic tomatoes. In general, there is really no single best organic tomato fertilizer because this plant is not very picky. However, since you are growing organic tomatoes, you need to use organic fertilizers instead of the chemical-based variety.
Tomato plants require lots of nitrogen, phosphorus and potassium to help them produce lots of leaves and fruits, and to fight-off diseases. Organic tomato fertilizers also contain micronutrients that are vital for the plants’ development.
Check the nitrogen, phosphorus and potassium ratio of the organic fertilizer that you’re planning to buy – it should be at least 8:10:10 or 10:10:10. Buy natural and less-refined organic fertilizer, or compost it if you have a good organic tomato fertilizer recipe at hand.
Below are the two major types of organic tomato fertilizer and their sub-types.
Manure – This organic fertilizer is old-school and it uses excrements from grass-eating animals. Don’t use your pet’s excrement because it usually contains pathogens and toxins which are harmful to the tomato plants, as well as humans. Cow or horse manure are excellent choices and they should be composted or aged first.
Fish emulsion – You can buy or make your own fish emulsion using a simple recipe. You can mix canned fish or fish parts with carbon-like sawdust and let it decompose.
Blood and bone meal -This may look weird, but this great combination of animal blood and bone is an excellent source of phosphorus and nitrogen. You can find this in garden stores.
Weeds and grass clippings – Green vegetation, even weeds, are great fertilizers since they have high nitrogen content. You must destroy the weeds’ seeds by composting it first.
Seaweed – Seaweed may be low in nitrogen, phosphorus and potassium, but it is loaded with up to 60 trace elements that are excellent for tomato plants.
Alfalfa meal – Alfalfa is high in nitrogen, phosphorus and potassium, and it is also full of micronutrients and hormones. Alfalfa meal usually comes in the form of hay bales or rabbit food.
Whichever organic tomato fertilizer you prefer, the key is to combine at least two types to provide maximum nutrients for optimum development. Several tomato farmers spoil their plants in a positive way by giving only the best combination of organic fertilizers.