The easiest way for most users to cultures sporophytes is to use a mini-terrarium constructed from a plastic drink bottle. Full instruction are available on the mini-terrarium web page. Bottles as small as 8-ounces or as large as 2-liters can be used. The commercially available potting soil (i.e. ProMix®) works very well. Fertilization using time-release pellets (i.e., Osmocote®) are effective and easy to use.