Fuente: WIPO "tomato" Apparatus, methods, and compositions including fibrous material and seaweed wherein the device has a surface for engaging with substrate and has a rigidity that decreases over time upon exposure to water, substrate, earth, or a combination thereof. The device may be a pot, disk, or sheet and may have a second surface to engage with earth. The fibrous material may be present in 70 weight percent or more or 60 to 97 weight percent. The seaweed may be present in 30 weight percent or less. The seaweed may include a brown macroalgae species and may include intact seaweed, derivatives of seaweed, seaweed processing waste, or a combination thereof. Methods and compositions including forming a slurry of seaweed and fibrous material, molding the slurry into the device, and drying the device. Forming the slurry may include hydrating fibrous material, seaweed, or both or introducing fibrous material to an agitation vessel.