Tomatoes, with their rapid plant growth and high fruit production, have high fertilizer demands. You can easily make your own tomato plant fertilizer with fish waste, an age-old fertilizing product. Naturally derived, fish emulsion fertilizer has been increasing in popularity with organic gardeners. And when seaweed is added, you create a balanced fertilizer with all the nutrients that your tomato plants need, including trace elements.
Put about a 2-inch layer of sawdust or packed dried leaves on the bottom of a bucket. Place the fish waste and chopped or crushed seaweed in on top. Add the molasses and Epsom salt plus 1½ gallons of water. Mix the solution well and cover the bucket.
Stir the solution every day or two for about two weeks.
Mix the emulsion well and strain it. Apply the emulsion to the garden prior to tomato planting at a rate of 1½ gallons per 100 square feet. Then plant the tomatoes and water them well.