House Plants/Orchids


What is the best soil for transplanting orchids?  Should I put rocks in the bottom to ensure good drainage?  Also do I need to stake  all flowering shoots?   Is feeding them recommended or should I just continue to give them plain  water?  I appreciate any advice that you can offer.


Hi Laura,

There are many different species of Orchids and they don't all have the same requirements. However, the chances are very good that you have a Phalaenopsis Orchid, so I will respond accordingly. If you have a different Orchid species, let me know.

Most Orchids do not grow in soil potting mixes. This is because in nature they are adapted to living up high attached to the bark of tropical rainforest tree limbs. Their roots are normally exposed to the air in humid conditions and will easily rot if planted in damp soil. In this respect, Orchids are different from most other indoor plants.

Potted Orchids are normally grown in bark chips or sphagnum moss or a combination of the two. Better plant shops sell small bags of Orchid mix. The mix should be without any soil and should be very porous and lumpy.

Orchids - even mature ones - rarely need pots larger than 6-8 inches in diameter. Be sure that the pot has drainage holes so that excess water flowing through the porous potting mix has a way to escape and not rot the roots. Using rocks or other "drainage material" in the bottom of the pot is an outdated and discredited practice. Drainage is never a problem if the pot has drain holes and the potting mix is properly porous.

I would wait about two years before repotting an Orchid. It takes about that long for the potting material to start to decompose. Gently remove the old material and replace it with fresh Orchid mix, keeping it in the same sized pot. It is fine if some of the roots grow over the rim of the pot; Orchids are not like other potted plants.

Never repot or disturb the roots when the Orchid is in bud or bloom. The flower stems (called spikes) are staked only to hold them upright so they are more visible. It is your choice as to whether you want to do this.

The easiest way to water Orchids is to take them to a sink and flush clear water throughout the potting mix. The excess water will run through within a few minutes after which it can be returned to its normal location in bright indirect light. If your tap water is on the hard side, use filtered or distilled water. Once a month, water with a solution of half-strength general purpose plant food or fertilizer.

I have written a detailed article on Orchid care, including how to get them to re-bloom, that I will email for free to you (or anyone else) who emails a request to me at I have also written an indoor plant care book in a PDF format that I can sell you if you contact me at my email address.

Please let me know if any of this is unclear or if you have any additional questions.

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Will Creed


I am the only expert in this category with professional hands-on experience and knowledge of all indoor plants. I can answer questions regarding light, water, fertilizer, repotting, pruning and humidity and temperature requirements. I can identify plant pests and provide information on safe, effective treatments. My answers are based on 35 years of professional experience and scientific research and are clear and easy to understand. I do NOT use search engines to find answers to your questions. If you read my previous posts here, you will get a good idea as to how thorough and professional my answers are.


I have over 35 years of professional indoor landscaping experience caring for plants in homes, offices, building lobbies, stores, restaurants, and other adverse environments. I have written extensively on the care of indoor plants, including a 260 page book. My specialties include Ficus trees, low light plants, repotting, pest control, and re-blooming holiday plants. Be sure to check my ratings and nominations to learn why I am the top-rated indoor plant expert. I am the only House Plant expert consistently ranked in the AllExperts Top 20.

BA, Amherst College

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