Formulas specifically designed for your Orchid growing needs.These formulas are recommended for all slap-mounted epiphytic orchids, those with exposed root systems, and terrestrial orchids in a soil potting mixture. Use also for gravel or inorganic culture. Must be dissolved in water before using. To help initiate flower spike feed cymbidiums with 6-30-30Blue during the dormant season (September - February). Use 20-20-20 Yellow as a general purpose feed for all cattleyas, vandas and dendrobiums and other orchids year round.