Douglas Fir bark is commonly recommended for orchids with medium sized roots which do not necessarily want to dry out completely between watering such as mid size Cattleyas and Oncidium Alliance. This material can be maintained for 18 months to two years before requiring replacement, depending upon your watering patterns.
A 1 litre bag will report 2 4 inch pots ( or 1.5 5 inch pots) A 3 litre bag will re-pot 4 five inch pots. A cubic foot box (28 litres) will re-pot 36 five inch pots.
Please NOTE: Due to the organic nature of this product we cannot ship outside of Canada.