We can thank orchid and other flower cultivators, in part, for the recentpush to recycle the water that reaches our homes, particularly that which falls as rain. If you are an orchid grower orchids, this is a subject you might like to investigate.
Orchids, like other plants, have very particular likes and dislikes as to the water provided them to nourish their roots. Most of them will not thrive in hard water. Unfortunately, the water that comes out of the faucets in many areas is too hard for orchids to respond as well as we might like. For the most part, hard water won’t kill orchids. It might stunt their growth, though, or keep them from ever blooming as beautifully as they might have.
A good thing about orchid plants is the fact that they have thick, fleshy roots that can hold up to hard water better than many other types of plants. Hardwood plants, as an example, with their fine roots, are too often ruined by water that is overly hard. Nontheless, you should try to avoid putting hard water on orchid plants if you can possibly avoid it.
You can buy filters that attach to your water line to soften the water while taking out various types of impurities. Nothing, though, is better than good old rainwater when it comes to doing right by orchids! After all, this is the way nature waters plants in the wild the world over.
A number of companies make rain barrels that are perfect for catching and storing rainwater until you want to use it. Many people set up the barrels below the rainspouts coming from their roofs. With a little planning and work, you could set up several rain barrels to channel water directly to your orchids. Then the watering task, presuming you live in a fairly rainy area, becomes virtually hands free.
Whatever water you use, don’t put it on your orchids if it has a chill on it. For instance, I would not use water taken from an outdoor faucet on a cold winter’s day, without first allowing it to come to room temperature in my home or in the greenhouse. Cold water can cause spots on the plants, rot the growths and damage the roots.
Some orchids will benefit from water with some lime mixed in it. In years gone by, people noticed that imported Cypripedium orchids often were covered with chalky lime deposits due to the plants having grown in limestone rock crevices where the water trickled down on them. So if you have a Cypripedium, you could try adding lime to its water, a little at first and then more if you determine that the plant is responding well to it.
The art and science of orchid cultivation is a fascinating subject. Orchid growing is not as difficult as some people like to make it out to be, but you must arm yourself with solid information before plunging in to this rewarding pastime.
The most complete guidebook to expert orchid care, without a doubt, is Orchid Care Expert by master orchid grower Nigel Howard, which is available to be downloaded from the web. Mr. Howard’s guide is a complete course of study, enlightening for beginners as well as the more experienced fanciers alike. In addition, be sure to visit here often at GoGoKitty’s Orchid Secrets, which features an ever-expanding library of entries on a wide range of facets of orchid care.

