3 Secrets for Orchid-Growing Success

Laying the Foundation for Best-Practice Orchid Care

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before buying an orchid

What You Need to Know & Do BEFORE Buying an Orchid

We talk a lot about how to take care of the orchids we already own and even what to look for when buying an orchid, but this article is about something different. 

There are 3 key ingredients to good orchid care:

  1. light,
  2. temperature and
  3. water.

The trick is to find an orchid whose need for these 3 components aligns with your orchid care environment. 

What you need to know before buying an orchid

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Location Location Location – Where will you put your orchid?

If you want your orchid for the short-term – like a long-lasting bouquet, then choose whichever orchid catches your eye. But, if you are in for the long-game. If you want an orchid that will re-bloom for you year after year – this super helpful article will help you select an orchid that will thrive given your growing environment.

Orchids that grow well in windowsills are phalaenopsis (moth orchids), paphiopedilum (slipper orchids), and brassavola, and Brassia orchids. If you have a bright, sunny window you can grow several cattleya (ie skinneri) and dendrobium ( kingianum, nobile, and phalaenopsis) varieties.

Orchids that grow well under lights include brassavola, mini cattleyas, dendrobium, oncidium, paphiopedilum, phalaenopsis. Compact and mini varieties tend to do best. If you are using fluorescent light tubes, remember that light is more intense in the center of the tube and less intense on the ends.

Windowsill Orchid Growers

Considerations for windowsill orchid growers:

First off, this might be stating the obvious, but, wash your windows. A clean window will allow more light to pass through. 

In addition, watch for these light-blockers: double-pane, storm, screens, and glazed windows all inhibit the amount of light that passes through. Exterior light inhibitors include trees, buildings, and other objects that minimize light from entering through a window.

Here are some good windowsill options: floor to ceiling windows, glass french doors, windows that fade furniture, east, south-east, and south-facing windows will all work.

Under Light Orchid Growers

If natural light is not an option for you, you are still in luck. Many orchids can grow extremely well under artificial lights – especially if you are able to summer your orchids outdoors. There are several advantages to growing under lights. 

Benefits to Growing Orchids Under Lights

  1. If the lights are in good working order, your orchids will always receive enough light – even on short, overcast winter days.
  2. Growing orchids under lights also reduce the risk of sunburn.
  3. Unlike many greenhouses, if you grow indoors under lights you will not have to worry about freezing temperatures that could wipe out a potentially an entire orchid collection. 
  4. If you can summer your orchids outdoors in a shady location – they will do especially well.

For more information on how to grow orchids under lights, click here.

Temperature – An Often Overlooked Consideration When Contemplating Orchids

We all know that orchids bloom better when they get enough light, but many orchids need a temperature change to initiate blooming. This is why many orchid enthusiasts don’t grow cool-growing orchids – they can’t get them to bloom because they can’t keep their orchids cool enough.

Cool-Growing Orchids Can be Difficult to Bloom

It is hard to cultivate cool-growing orchids as it is hard to sustain cool enough temperatures indoors. Cool growing orchids are best left to either greenhouse growers who live outside of Florida-type climates or those who live in San Francisco-type climates. 

For most orchid growers, orchids that require warm to intermediate temperatures are easiest to cultivate and initiate blooming.

Warm growers: between 65° – 85° F / 18.3° – 24.9° C. Give these orchids winter lows between 65° – 70° F / 18° – 21° C and summer highs around 85° F / 29° C.

Intermediate growers: between 60º – 80°F / 15.5° – 26.6° C. For optimum care provide these orchids with winter lows of 58°-62° F / 14.4° – 16.6° C and summer highs in low 80s° F / 27° C.

Cool growers: between 50° – 75° F / 10° – 23.9° C. These orchids prefer winter lows around 50° F / 10°C and summer highs around 80°F / 26.6° C.

To learn more about warm, intermediate, and cool-growing orchids, click here

Watering Orchid Roots and Leaves (Humidity)

There are basically three things you need to know when it comes to watering orchids. First, when to water the roots. Second, how to water the leaves. And, third, when not to water your orchids. Some orchids require a dry, winter rest and don’t require any water, or very little water.

Watering Orchid Roots

Let’s begin by discussing how to water an orchid. For phalaenopsis, the most common grocery store orchid, and paphiopedilum (or slipper orchid) – these orchids don’t have any water storage and like their potting medium to be lightly damp. I like to add a 1/2-inch square of wool rock to my Fir bark potting medium to facilitate a slightly damp potting mix. 

The roots of a phalaenopsis, for instance, will tell you everything you need to know about watering. Dry, healthy roots that are ready for water are light, silvery-green with bright green tips. Wet roots are bright green. Dead, dry roots are brittle and pale yellow or tan. Over-watered dead roots are a mushy, stringy black color. Water your phal when the roots are silvery-green.

Other orchids, like cattleyas and dendrobiums, like to be dry out between watering. 

TIP: When you do water your orchids, water thoroughly and copiously.

Watering Orchid Leaves – Humidity

Next, orchids need water in the air through humidity. Orchids have little pores in their leaves, called stomata, that open to absorb carbon dioxide and to emit oxygen – this results in water loss. When an orchid breathes, it is called transpiration. Healthy vigorous orchids need water in the air to make up for water lost during transpiration.

Your job is to make sure that the humidity in the air is equal to the water lost during transpiration. You can do this easily if you live in a humid climate. If, on the other hand, you are a desert rat like me, you will need to provide additional humidity. The easiest way to do this is by using a humidifier

Indoor growers, use a humidistat to keep track of humidity levels. Aim for humidity levels of about 50%. Higher humidity levels will ruin your drywall and encourage mold – and you don’t want that.

Design Your Orchid-Growing Space

  • Light – Determine your orchid-growing space: windowsill, under lights. Got lots of natural light? Fantastic! If not, buy a simple grow light system.
  • Temperature – Choose orchids that thrive within the temperature variations of your orchid-growing space. For most of us, this includes warm to intermediate orchids.
  • Water – Before purchasing an orchid, be sure that you can provide enough humidity for your orchid. If you live in a humid climate, perfect, if not, buy a humidifier.

Learn More About Orchids Well-Suited to Your Growing Environment

You’ll want to buy orchids that do well either in a bright window or under lights, orchids that thrive in warm to intermediate temperature and that need no more than 50% humidity. To learn more about orchids that meet these easy-to-grow requirements, click here. Putting these tips into action will help you get an orchid that is most likely to repeatedly bloom, grow new leaves, and put out new roots. 

Want to Learn About Specific Types of Orchids?

Check out these downloadable orchid care cards to learn about the care requirements of specific easy-care orchids.


Related Reading

How to Care for Your New Orchid – A Complete Guide for Success

A Complete Guide to For Success


Buying Orchids: Top Quality Best Price

Find the Right Orchid for YOU

  1. Charlena says:

    I am wondering what is the current humidity level for my Phalaenopsis at during the winter VS the spring and summer? My Phalaenopsis are not getting enough humidity with the water and rock trays method. My orchids do not have a lot of roots. How often should I fertilize my orchids to grow more roots? I also have an orchid with crown rot. How do I cure my orchid of crown rot? Do you have any suggestions? Also it doesn’t have any roots. Why do orchids lean over? Most of my orchids tend to lean over. How do I solve this problem?

    1. Anna says:

      I try to keep my humidity levels year-round close to 50%. If your orchids have root loss and crown rot, you can solve this by improving your watering technique. Root loss is caused by overwatering and crown rot is caused by water accumulating on the stem. Here are some helpful articles:


      The good news is that once you have watering under control, caring for your phals will be SO MUCH EASIER!
      All my best,

  2. Anonymous says:

    thank you for your clear explanation and input. Elda

  3. Priscilla Davis says:

    If summering orchids outside, how do you prevent crown rot when it’s raining for a day or two? That’s why I haven’t kept any of mine outside.

    1. Anna says:

      That is a good question. If my orchids were in two pots, a clear, slotted pot, and an outter pot I removed the secondary pots so that they were in just a single slotted pot. The orchids in clay pots were fine. Good drainage is essential.

      Keeping orchids a few feet off the ground keeps water from splashing and spreading bacteria, and also keeps them from sitting in water when it rains.

      If you have continuous rain, you might want to move them under a covered porch. But, if it rains, and then the sun comes out and a light breeze blows, it is usually enough to dry the orchids out.

      Where I live the sun is intense, so I keep mine under a covered porch and the orchids still get plenty of light – and summer breezes.

      It is always a good idea to check the crown to be sure that water isn’t pooling.

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Are your orchid leaves limp and wrinkly?

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