Carolina Biological Supply Company Fern Minimarsh

This fern minimarsh allows you to add water, set in a window, and observe. The preplanted fern spores germinate and produce the microscopic filamentous stage (1-dimensional growth) in 2 to 3 weeks. The heart-shaped (2-dimensional growth) prothallia are obvious in 4 to 6 weeks, and sporophytes occur in 10 to 12 weeks. Note: Fern Minimarsh can be stored in a cool, dark place for up to 2 weeks before initiating growth.