Fill a newly emptied apple juice bottle with 2 cups of warm water. Replace the cap, shake the bottle vigorously and pour the contents into a medium-size plastic storage container. The rinse loosens the remaining apple juice residue, which is rich in potassium, from the bottle's walls. Don't use straight apple juice, as the product is too acidic for the orchid.
Add a quarter-cup of molasses, the contents of three used tea bags and a half-cup of bonemeal, which is available at home improvement and hardware stores, to the rinse water. The molasses is also high in potassium, while the tea bags provide you with the nitrogen you need and the bonemeal covers the orchid’s phosphorous requirements.
Stir the ingredients together thoroughly and pour two tablespoons of the mixture into the soil of a single potted orchid. Repeat fertilizing the orchids with this amount once-a-week.