How Often Do You Need to Fertilize Tomatoes?
You need to fertilize tomato plants when you first plant them in your garden. Just use a small amount of worm castings (1/4 cup) by each plant and then wait until they start to bear fruit. Then fertilize them again and every 1-2 weeks while they are producing fruit. Water after each time you apply fertilizer for best results.
Plants need more nutrients and water while they are producing fruit. It is a stressful time for plants.
I cannot stress enough how fantastic worm castings are as far as fertilizers go. Worm castings are far and above any agricultural grade fertilizers. The 2 are not even close. Worm castings are 100% organic and natural. They not only provide more nutrients than commercial fertilizers but also provide minerals, beneficial microbes and enzymes. Commercial fertilizers only provide nitrogen, phosphorus and potassium.
You never have to worry about how much worm castings to apply to your garden. No matter how much you put down, it will never harm your plants.