It is important to use Petri dishes that are filled properly. Because C-Fern cultures are maintained for a prolonged period of time it is necessary to fill each dish three-quarters full with medium. (See How much medium should I pour into the culture dishes?). Another factor may be the environment in which the dishes are kept. Environmental growth chambers may have a constant air flow which can cause premature drying out of cultures. In this situation, to reduce evaporation of media, the cultures can be kept within culture domes that are firmly secured. Newly developed C-Fern Growth Pods maybe a solution to culture drying as well as maintenance and regulation of optimal temperature for C-Fern growth. C-Fern Growth Pods can be assembled from inexpensive and easily obtainable materials.