Pfeffer Medium

Originally cited by Hadley, 1982. European terrestrial orchids. In Orchid Boiology, II. Reviews and perspectives, ed. J. Arditti, pp.  326-9. Ithaca, New York: Cornell University Press.

Ca(NO3)2 * 4 H2O  800 mg  KCl  100 mg   K2HPO4  200 mg  KNO3  200 mg  MgSO4 * 7 H2O  200 mg  FeSO4 * 7 H2O  0.97 mg  CuSO4 * 5 H2O  0.16 mg  MnSO4 * 4 H2O  0.08 mg  (NH4)6Mo7O24 * 4 H2O  0.26 mg  ZnSO4 * 7 H2O  0.74 mg  Glucose  20 g  Agar  10-15 g

Optional: 1 g potato extract, 1 g yeast extract, or 100 ml coconut milk.

Source: Rasmussen, H. Terrestrial orchids from seed to mycotrophic plant. Cambridge University Press, Cambridge. 1995.