Orchids have long captivated gardeners with their stunning beauty, but they have unique needs when it comes to lighting and watering. Thankfully, when gardeners feed the ornamental plants carefully, they are rewarded with a crop of flowers year after year. According to one gardener, the key to a successful orchid may be to fertilise it with rice water. The hack appeared on the Facebook page Orchid Tips and Tricks, and promises to provide the plant with a strong nutrient boost. Used rice water, a common household by-product, serves as a natural fertiliser thanks to nutrients like nitrogen, phos…