Wiggle Worm Castings Shop

Boost your garden with Wiggle Worm Castings—nature’s purest, most powerful organic fertilizer. Packed with essential nutrients and beneficial microbes, this premium earthworm castings product revives your soil for lush, thriving plants. Whether you’re growing vegetables, flowers, or houseplants, Wiggle Worm Castings enhance growth, improve soil structure, and support long-term plant health.

Top Wiggle Worm Castings

Wiggle Worm Soil Builder 30 lb. Bag

This bulk-sized bag is the most popular choice for avid gardeners and professional landscapers looking to improve soil aeration and nutrient density across large garden beds or lawns.

Wiggle Worm Soil Builder 15 lb. Bag

The 15 lb. bag is a versatile mid-sized option perfect for home gardeners who need a steady supply of organic nutrients for several indoor houseplants and outdoor flower pots.

Wiggle Worm Soil Builder 4.5 lb. Bag

This compact bag is the ideal introductory size for beginners or apartment dwellers who want to provide a quick nutrient boost to a few select potted plants or seedlings.

Wiggle Worm Castings offers a range of premium organic products designed to enhance the health and growth of your plants, whether you’re cultivating a backyard garden or managing large-scale farming projects.

Organic Fertilizer

Wiggle Worm’s 100% pure earthworm castings (1-0-0 NPK) are OMRI-listed for organic use, making them an ideal choice for vegetables, flowers, houseplants, lawns, and more.

Soil Amendment

This product improves soil aeration, water retention, and microbial activity, helping to foster healthy fibrous root growth for a thriving garden.

Bulk Castings

For large-scale needs, Wiggle Worm offers bulk quantities of earthworm castings through affiliated suppliers like UNCO Industries, catering to farms, stadiums, and commercial growers.

Best Worm Castings! Time to Order More From Wiggle Worm!


Reviews

Sarah Henderson
“I’ve been using Wiggle Worm Castings for my vegetable garden for the past year, and the results are nothing short of amazing! The soil is rich and full of life, and my plants have grown healthier than ever. I love knowing that it’s all organic—no chemicals, just pure, natural goodness from earthworms. My tomatoes have never tasted so sweet, and my flowers are blooming with vibrant colors. This product has truly transformed my gardening experience.”

Michael Lee
“As a commercial landscaper, I rely heavily on high-quality soil amendments, and Wiggle Worm Castings has been a game-changer for my clients’ lawns and plants. Not only does it improve soil aeration and water retention, but I’ve noticed a significant increase in root development, which translates into healthier, more resilient plants. The fact that it’s OMRI-listed for organic use makes it a trustworthy and environmentally-friendly choice for my business.”

Jennifer Matthews
“I recently started using the bulk castings for my farm, and I can’t say enough good things about them. The earthworm castings have improved the overall soil structure and significantly enhanced the microbial activity in my fields. The consistency and quality of the product are top-notch, and the customer service from UNCO Industries has been fantastic when I needed bulk orders. It’s a must-have for anyone looking to grow quality crops.”

Wiggle FAQ

What exactly are Wiggle Worm Soil Builder worm castings?

Wiggle Worm Soil Builder consists of 100% pure earthworm castings, which is essentially a polite way of saying worm manure that has been carefully harvested and screened to provide a nutrient-rich, organic soil conditioner.

Will these castings burn my sensitive plants if I use too much?

No, unlike synthetic fertilizers or high-nitrogen animal manures, Wiggle Worm castings are non-burning and completely safe for even the most delicate seedlings and bedding plants at any concentration.

How do I use Wiggle Worm castings for my indoor houseplants?

For established indoor plants, you can simply add 1-2 inches of castings to the top of the soil and water them in, or mix 1 part castings to 3 parts soil when repotting for a long-lasting nutrient boost.

Are Wiggle Worm castings safe to use around children and pets?

Yes, this product is 100% organic, non-toxic, and odorless, making it a safe and eco-friendly choice for gardens where children and pets play.

Can I make a liquid fertilizer using these castings?

Absolutely; you can create “Casting Tea” by soaking 1 part castings in 3 parts water for 12–24 hours, which creates a potent liquid fertilizer excellent for fruiting or flowering plants.

What is the N-P-K rating for Wiggle Worm Soil Builder?

Wiggle Worm Soil Builder typically carries a guaranteed analysis of 1-0-0, focusing on a steady release of nitrogen and essential micronutrients like calcium and iron to promote healthy foliage and root growth.