Curtis medium

Originally cited by Oliva and Ariditti, 1984. Seed germination of  North American orchids. II. Native California and related species of Aplectrum, Cypripedium, and Spiranthes. Botanical Gazette, 145, 495-501.

CaCO3  148 mg  KH2PO4  240 mg  MgSO4 * 7 H2O  520 mg  Urea  250 mg  AlCl3  0.03 mg  CoCl2 * 6 H2O  0.03 mg  CuSO4 * 5 H2O  0.025 to 0.03 mg  FeCl3 * 6 H2O  1 mg  FeSO4 * 7 H2O  11 mg  H3BO3  1.0 to 6.2 mg  KI  0.01 to 0.83 mg  Na2MoO4 * 2 H2O  0.25 mg  NiCl2 * 6 H2O  0.03 mg  ZnCl2  3.93 mg  ZnSO4 * 4 H2O  1.0 mg  ‘Wuchsstoff 66f’  0.1 mg  Coconut milk  100 ml  Banana homogenate  75 g  Glucose  10 g  Graphite  2 g  Agar  14 g

Medium is adjusted to pH 5.0.

‘Wuchsstoff 66_f’ is reported to be available  from Gerlach GmbH, Germany.

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