E1_15lb-founder-greenhouse

Grown on our family farm in Wisconsin

We started Sweet Leaf in our backyard in Wisconsin with a small worm bin, some kitchen scraps, and a real curiosity about what living soil could do for houseplants. A few years later, we're still farming the same way: unhurried, small-batch, and honest about what goes into every bag. Our worms eat clean organic feedstock, and what comes out is pure castings, screened, freshness-dated, and ready to help your plants thrive.

Shop worm castings

Why worm castings?

Most potting mix is inert. It holds water and keeps roots from tipping over, but it doesn't feed your plants. Worm castings are different. They carry beneficial microbes, naturally balanced nutrients, and are gentle enough that you can't overdo it. Your plants notice the difference quickly.

We make ours from 100% worm-processed feedstock. No manure, no sawdust filler, no sand. Just what the worms made, screened fine and bagged fresh.

What we stand for

  • Wisconsin-made

    Farmed in Wisconsin from day one. Every bag comes from our own worm beds, not a contract facility, not a blended product.

  • OMRI organic

    OMRI Listed for use in organic production. We test every batch and keep our certification current so you know what you're getting.

  • Small-batch, always fresh

    We don't warehouse castings for months. Each bag is freshness-dated so the microbial life is still active when it reaches your bench.

  • Plant-care help included

    Questions about how much to use or when to top-dress? We answer our own messages. Real people, straightforward answers.

Trusted by growers

OMRI Listed

OMRI Listed

Certified organic input

Made in Wisconsin

Made in Wisconsin

Family worm farm

Lab-Tested

Every batch