Orchids grow in bark medium and require additional nitrogen to satisfy not only the plant's requirements but also for the breakdown of the bark medium. This formula emphasizes the vegetative growth stage (leaves). It is an excellent root and foliar feeding product not only for orchids, but for ornamental grasses. Switch to Jack's Bloom Booster when orchids set spike and get ready to bloom. Availability: Usually ships the next business day. Jack's Classic Orchid Special (8 oz) 9653008$5.95 We guarantee satisfaction with everything we sell. Questions? Call us toll free at 877-898-6546. Mon. - Sat. 9-6, & Sun. 10-5 Mountain Time