About Us Learn more about our company and the premium products that we provide. Our Company About Sertia Soils Online Store Enter Shop Now Cast and Frass™ About Cast and Frass™ VermiCast™ About VermiCast™ Interested? Shop all categories! Sertia Developments Inc. has the ability to create worm castings that suit your specific plantrequirements. Customized VermiCast™ Blends have been developed for the Cannabis/Hemp plant and Hazelnut tree. Go to shop Impress with great looking and tasting melons when using Sertia Soils amendments in your garden Improve yield of all garden vegetables by mixing in VermiCast or Cast and Frass into soil Grow a variety of healthy Eggplant when using Sertia Soils amendments in your garden The proof is in the pudding. Cannabis thrives with VermiCast and Cast and Frass mixed in soil.