Natural Fertilizer For Tomatoes

As a tomato gardener, you know that the secret to growing delicious tomatoes lies in the soil. If your soil is rich and full of nutrients, you’ll grow tomatoes with lots of flavor and color. But if your soil is lacking in some way, your tomatoes will also lack flavor, color, or both. Luckily for us tomato gardeners there are a number of natural fertilizers that can keep our soils healthy (and our plants happy). If you’re ready to spice up your tomato garden this year but want to do so naturally, here are the top five natural fertilizers for tomatoes:

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Alfalfa is a legume and a good source of nitrogen. It’s high in potassium and phosphorus, as well. It also contains calcium, sulfur, iron and magnesium.


Bananas are often seen as a waste product. In fact, banana peels are rich in potassium and magnesium, which means they’re great for your tomato plants’ health!


Banana peels have plenty of nutrients that your tomatoes will love. They contain:

  • Potassium: A mineral that helps with the growth of roots, stems and fruits. It also boosts the plant’s ability to fight off diseases like powdery mildew and blights.
  • Magnesium: Helps plants grow stronger by strengthening cell walls while fighting off diseases like brown spot on potatoes or leaf curl disease on apples (also known as apple scab).
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Compost is an excellent natural fertilizer. It is a great source of nutrients for your tomato plants, and it also contains organic matter. You can use compost as a soil amendment or as a top dressing in the planting hole. Compost is easily made from many different materials, such as grass clippings, leaves, kitchen scraps or even coffee grounds. You can also purchase bags of pre-made compost at your local nursery or home improvement store if you don’t have time to make your own batch in a compost bin (also called “worm” bins).


Seaweed can be applied as a fertilizer to tomato plants by simply sprinkling it on the soil around each plant. It is a great source of nitrogen, potassium, and phosphorus. Seaweed is also a great source of trace minerals such as iodine, copper and zinc. Seaweed contains significant amounts of calcium which helps with cell division in roots. This helps prevent blossom-end rot (BER).

In addition to these benefits, seaweed has been shown to improve overall plant health by stimulating root growth and improving photosynthesis efficiency

Wood ash

Wood ash is a good source of potassium, phosphorus, nitrogen, calcium and magnesium. It also contains sulfur and iron. The pH of wood ash tends to be alkaline (7.5), but it can be adjusted by adding peat moss or other organic materials that are acidic in nature if desired.

Natural Fertilizer For Tomatoes

Natural Fertilizer For Tomatoes

  • Alfalfa pellets or hay. Alfalfa is a legume and will give your tomatoes a natural nitrogen boost.
  • Banana peels. Bananas are rich in potassium, which can help prevent blossom end rot (BER). This is best done in early spring before your tomato plants start to bloom by placing the peels around the base of each plant as a mulch or placing them directly on top of BER spots. If you have more than one tomato plant, keep banana peels separate from each other so they don’t cross-contaminate their flavors because this could affect how well your tomatoes grow later on.
  • Composting – You can use composted manure for fertilizing tomato plants if you have access to it, but if not then there are plenty of other options available such as worm castings (which come from redworms) which contain lots of beneficial bacteria that helps break down organic matter into nutrients easily absorbed by plants when mixed with soil around roots; aged earthworm castings make excellent fertilizer since they contain high amounts ¬†of organic matter that has been broken down by earthworms into smaller particles making them easier for plants like tomatoes which tend have large root systems so they need something easy to absorb quickly while providing enough nutrition throughout growing season without burning out quickly like chemical fertilizers often do after only few weeks due to overuse even though these products may seem inexpensive initially costs add up quickly especially when considering environmental impact too!
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We hope you will try out these tomato fertilizers and let us know how they worked for your garden. Don’t forget to tell us about all the delicious fresh tomatoes you will be eating with them!

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