Why do some plants grow spores and not seeds? Well…spores are actually a reproductive strategy for certain plants, particularly those in specific ecological niches and those with an evolutionary lineage that developed before the advent of seeds. Like Fern plants and Mushrooms/Mycelium! Some reasons that spores grow instead of seeds: 1. Evolutionary History: Spores are an ancient reproductive strategy, predating the evolution of seeds. Early plants, like ferns and mosses, reproduce via spores, a