Get premium worm castings for your spring planting!

Shop Now

Natural fertilizer and farming are solid matches that improve crops' growth speed and yield. The benefits fertilizers give to plants are abundant, but worm castings have more advantages, organic matter, and nutrients.

It's safe to say worm casting is the best fertilizer with how nutrient-dense the soil becomes when castings mix with soil. Worm castings come from earthworms poo, and it's a slow-release fertilizer used to fertilize vegetable plants and improve garden soil.

You can use worm castings for your vegetable garden, and they will give high-quality nutrients to the garden beds. Plants that are susceptible to acid will need additional help for their survival. Also, it doesn't have as much nitrogen for healthy plant growth. 

Red worms tunnel into potting soil to feed on your regular compost, leaving their casting behind as soil nutrients. The worm bin composting method will help you harvest worm castings which you can use for future planting.

In addition, red wigglers leave an opening while tunneling in the potting soil for air and water to pass. The resulting soil aeration makes the garden soil stronger and heightens its yield. 

Furthermore, the strength of worm castings is in soil structure amendment, and it gives container plants nutrients they can absorb quickly. Also, use worm manure for hanging baskets and seed germination.  

The nutrients worm castings contain are magnesium, potassium, phosphorus, copper, calcium, iron, and carbon. 

Worm casting tea nourishes vegetable plants and acts as a soil conditioner. It spreads farther than its physical components, reduces many plants diseases, and is a better alternative to chemical fertilizers and animal manure.

Are Worm Castings a Complete Fertilizer?

Fertilizers are synthetic and nutritious to plants. However, these attributes fall short compared to the nutrients earthworm castings gives to plants.

Worm castings have soil-promoting properties but aren't a complete fertilizer. Furthermore, they don't have all the nutrients plants need without adding fertilizer or other soil amendments to improve it. 

Therefore, as a replacement for fertilizer, earthworm castings wouldn't work. However, its organic material in the potting mix is perfect for transplanting vegetable plants.

Are Worm Castings Better Than Fertilzer?

In terms of nutrients, worm castings have the upper hand. The high-quality nutrients they provide help acid-loving plants increase their yield, and it wards off pests from the plant.

The reason earthworm castings can't replace fertilizer is that it has neutral acid pH of 7, which may stifle the growth of plants susceptible to it. 

To counter this, mix worm castings with acidic amendment soil in the planting hole, and it will neutralize worm castings acid, allowing the plant to grow. 

Can Worm Castings Burn Plants?

Because of their organic materials, you can plant worm castings without fear of root rot or burning the plant roots. Unlike most synthetic fertilizers, worm castings are rich in nutrients that potted plants can absorb instantaneously. 

Its organic matter nourishes the plant's roots, and since earthworms are beneficial microbes, its castings repel most pests. 

Where Do Worm Castings Come From?

From the name, you can get an idea of the origin of worm castings. These are worm droppings that are the result of worms eating compost, also known as vermicomposting.

For homemade worm castings, add worms together with compost in a worm bin, and collect the castings their digestive system lets out after feeding. You can buy worm castings from your local farm shop.

Advantages of Worm Castings

The benefits to enjoy from worm castings and worm tea are numerous. It filters heavy metals in the soil, maintains a healthy balanced neutral pH soil, and prevents diseases during the growing season. 

Furthermore, when you use worm castings, it balances carbon in the soil, enriches plants with beneficial bacteria, and retains water and minerals through humic acid. 

Planting with worm tea is safe to use, and it further strengthens the soil. It makes an excellent liquid fertilizer. 

When to Add Worm Castings to Soil

You can add worm castings to planting holes immediately after you start growing, and it makes a good seed starting soil suitable for transplanting vegetable plants and established plants. Using worm castings guarantees healthy plants and improvement of plants yield.

How Much Worm Castings Do I Need?

There is no limit to the worm castings you can use. A handful of worm castings will improve the soil nutrients of your container plants as much as a good number of them will too.

However, for a measured output, use 1 cup of worm castings with 1 cup of fertilizers for planting perennials, potted plants, and hanging baskets. For older plants, you can use the exact equivalent or higher. Too many worm castings won't harm your plants. 

As a liquid fertilizer, worm casting tea spreads the reach of a handful of castings tremendously in the plants' planting hole and the exterior.

Are Worm Castings Good for All Plants?

All plants welcome the nutrients from worm castings. The plants susceptible to acid still benefit from worm castings nutrients if you add acidic amendments to the soil mixture. 

The plant becomes resistant to acid and draws nutrients from the castings and fertilizers, making for healthy plant growth. The same goes for worm casting compost tea. 


Worm casting is proven to be rich in organic nutrients and would benefit your plants greatly. Its usage guarantees no root burn; instead, it protects your roots from pests and diseases, feeding them nutrients that improve yield. 

Furthermore, worm castings can't replace fertilizers entirely because they lack some nutrients plants need for growth. But it's a beautiful alternative to fertilizers, and its compost tea makes an exceptional liquid fertilizer. 

Use worm castings for hanging baskets, container planting, established plants, and shrubs. Make sure to mix worm castings with acidic amendments for soil susceptible to acid.

Lastly, warm castings are not harmful to plants. Therefore, you can plant with as many castings as you want, but you can mix 1 cup of worm castings with 1 cup of fertilizer for measured output. 

Grow Bigger Plants with Simple Grow

Do you wish your plants would grow bigger? Was your garden less than it should've been last year?

If you're tired of growing puny vegetables and fruits, it's time for an upgrade...Simple Grow Worm Castings!

What are worm castings? Another term for worm manure. Why would you want to use it in your garden, raised beds, and house plants? Because it makes them grow bigger, faster and healthier...with no chemicals!

How do worm castings do this? It's like giving your plants a powerful multivitamin with everything they need to grow. Trace minerals, nutrients, and most importantly...worm castings are chock full of beneficial microbes. Why does that make a difference?

In recent years, we've learned the importance of gut bacteria for humans and know that it impacts so many different parts of our health. The same thing applies with worms. Gut bacteria from the worm's digestive tract gets into the soil from the worm castings and promotes plant health. Plants have a symbiotic relationship with the microbes from the worm's digestive tract. Plants respond to it and grow really big...really fast!

If you've never tried worm castings before, you owe it to yourself to give them a try. Instead of using traditional chemical fertilizers from the big box store, why not try fresh, certified organic worm castings this year? You'll be able to grow bigger, healthier plants that you actually can feel good about eating. 

Take advantage of our special bundle sale on 25lb bags today!


Liquid error (layout/theme line 334): Could not find asset snippets/revy-bundle-script.liquid