We carry only the very best quality orchid fertilizers and they have all been proven to yield excellent results in our own research greenhouses. Jacks Classic fertilizers are the original blends developed by Jack Peters and continue to be a favorite of commercial orchid growers across the country. Our Dyna Gro orchid fertilizers are a concentrated liquid that is easy to use and include all the essential micronutrients. These Dyna Gro fertilizers are yielding superior results in our own greenhouses. You will like them.