The Greenhouses of the Cockrell Butterfly Center

April 21, 2008

Since they are located on the roof of the parking garage, there are  thousands of Houston Museum of Natural Science visitors who don’t know that the greenhouses of the Cockrell Butterfly Center even exist.  That will all change, now that you have access to the details of our daily operations.

There are actually three glass greenhouses, each 1000 sq. ft. in size. They come complete with their very own heating and cooling systems.  There are lots of daily activities that occur within these hidden glass walls above the gems and the dinosaurs located in the main halls below.  These daily activities occur in rain, shine, wind, hail, tornado, hurricane…(Evacuate!!!), and flood.   (More on those in upcoming posts.)


The first of these three greenhouses, greenhouse #1, is used mainly to propagate and raise host and nectar plants used in butterfly gardening.  These plants are utilized in the Tropical Rainforest environment of the Butterfly Center for nectar enhancement of the meadow area and other pocket areas as needed. Tropical plant species awaiting transfer into the Rainforest Conservatory by one of our staff horticulturist are also housed in greenhouse #1.

Between April and November, these plants may also be found for sale on our Plant Cart, located just outside the collections gift shop. We also hold two, larger plant sales each year,  in April and October.


Hungry, Hungry, Caterpillars!

Greenhouse #2 houses 850 tropical passion-flower vines that are used to feed hungry caterpillars (the larval stage of the butterfly life cycle).  There are also hundreds of nectar sources utilized in our Heliconius rearing program. (In case you were wondering, nectar sources are the flowering plants that provide nectar to butterflies as a food source.)

Greenhouse #3 houses our butterfly rearing and larval (caterpillar) pupation facilities.  Within these insectaries, we house male and female mating pairs of the longwing butterflies.  Once the butterfly eggs are collected from the rearing insectaries they are transferred into the “pupation area” where the larvae continue to feed and grow until they  pupate. 

Upon pupation, the pupae, or chrysalis, are collected and transferred to the entomologist for processing.  After the pupae have emereged, they are transferred into the Cockrell Butterfly Center’s rainforest environment as adult butterflies; ready to feed and start the cycle of life over again.

Authored By Ory Roberts

Ory is the Greenhouse Manager/Rearing Coordinator for the Cockrell Butterfly Center. Didn’t know there was a greenhouse at the Museum? She raises 20,000 Heliconius longwing butterflies there, as well as thousands of host and nectar plants for butterfly gardening. Check out her posts for more information on gardening with nature.

3 responses to “The Greenhouses of the Cockrell Butterfly Center”

  1. Chrissy says:

    Are visitors allowed to go inside these greenhouses?

  2. Chris says:

    Hi Crissy
    Unfortunately the Greenhouses are not open to the public.

  3. Noah Kotlarek says:


    My name is Noah Kotlarek. I go to Fordham University in New York City but grew up in Houston. My school project is to build a greenhouse for the university and I was wondering if you could provide me information on how much it cost to build the greenhouse initially and how much it costs to run it (heating and cooling) every year. Also, who built the greenhouse?

    Thank you,

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