Welcome, plant enthusiast. From our perspective as Dendrobium orchids, we appreciate your interest in inviting us into your home. To thrive and reward you with our spectacular blooms, we require an understanding of our fundamental needs. Think of this not as a set of strict rules, but as a guide to replicating our natural, tropical habitat.
We are epiphytes. In the wild, we do not grow in soil but instead anchor ourselves to trees, absorbing moisture and nutrients from the air and rain. Therefore, traditional potting soil is a death sentence for us, as it suffocates our roots and causes rot. We require a loose, chunky, and extremely well-draining medium. Ideal mixes include fir bark, sphagnum moss, perlite, and horticultural charcoal. This allows our roots to breathe and access water without sitting in it. Our pot should have ample drainage holes and be only slightly larger than our root mass; we actually enjoy being slightly pot-bound.
We crave bright, indirect light. A spot near an east-facing window is often perfect. A south or west window can work if filtered by a sheer curtain. Our leaves will tell you if the light is correct: a light green color indicates happiness, while dark green suggests we need more light, and reddish-green means we are getting too much. Water us thoroughly when our potting medium is nearly dry, allowing water to flow freely from the drainage holes. Then, let us be until we are almost dry again. We also adore humidity, ideally between 50-70%. A humidifier or a pebble tray filled with water placed near us will make us very content.
During our active growth period (typically spring and summer), we are hungry. Feed us with a balanced, water-soluble orchid fertilizer (e.g., 20-20-20) diluted to half-strength every other week. This fuels the growth of new canes (pseudobulbs) that will eventually bear flowers. However, many of us require a distinct rest period in the late fall or winter. During this time, reduce watering and stop fertilizing entirely. Provide us with cooler nighttime temperatures. This seasonal cue is absolutely critical for triggering our magnificent bloom cycle.
Our flowers emerge from small nodes on our canes. After our blooms fade, you may wonder what to do with the flower spike. For many Dendrobium types (like the popular nobile hybrids), you should not cut the entire cane after flowering, as it stores energy and may produce new growths or even keikis (baby orchids). Instead, simply remove the spent flower spike itself, leaving the healthy green cane intact. With the right care and seasonal rhythm, we will be eager to put on a breathtaking display for you season after season.
