Site amelioration for direct seeding of Caladenia tentaculata improves seedling recruitment and survival in natural habitat

Abstract

The genus Caladenia contains the largest number of threatened orchid species in Australia and improv- ing the success of re-introductions would allow exist- ing populations to be strengthened and new popula- tions to be established. Batty et al. (2006) showed that direct seeding of C. arenicola Hopper & A.P. Br. into habitat soil inoculated with mycorrhizal fungus resulted in a good in situ germination rates.