I have been gifted several orchids in my office but hadn't had any luck getting them to rebloom . . . until I switched from drinking coffee to green tea every morning! Even I was a little shocked to discover those delicate orchids would love my green tea switch as much as I did.
Let me explain: I'm an avid coffee drinker but finally decided five cups a day were a few too many. About six months ago, I cut back to two cups right when I wake up at 5 a.m. By the time I get into the office after my 6 a.m. barre class, I usually need a second pick-me-up round of caffeine, so I grab a mug of green tea.
Every morning was the same, and I would limit myself to two cups of tea, using the same tea bag to cut back on my caffeine intake. Frequently, at the end of the day, I would have just a little bit left from my second cup. Rather than pour it down the sink, I developed a habit of watering the orchids on my desk with it. The tea was never hot and always pretty diluted. After about a month, I noticed new flower spikes beginning to develop.
On average, I never gave either plant more than one or two tablespoons of tea water per day, and at the end of the work week, I would make sure to dump any excess water from the pot so they would have a dry period over the weekend. Along with sharing my tea, I also followed general orchid care tips, like making sure the plants were never too soggy and that they had plenty of indirect sunlight.
Orchid reblooming is not a fast process, so be patient; the reward of new flowers is well worth the wait. So before you give your orchid the boot and pick up another one, try to rebloom it with a little diluted tea water. It just might turn your black thumb into a green one. And this technique isn't just for orchids; it will work with any plants that thrive in more acidic soil, like roses and ferns.