Archives For #CBGSprout

In the past year, more than 181 million people learned about Spike, Alice the Amorphophallus, and Sprout—the Chicago Botanic Garden’s titan arums (Amorphophallus titanum) that entered a bloom cycle—through various media sources.

Now even more people may have the chance to learn about the unique corpse flower from seedlings sowed at the Garden that have been shared throughout the United States.

It all began about 12 years ago when the Garden procured titan arum bulbs and seeds, which we carefully cultivated until they were ready to flower. With the bloom cycles of Alice and Sprout, we wanted to try to pollinate our plants. In nature, titan arums are pollinated by carrion beetles. Since such insects don’t exist at the Garden, we needed to do the work ourselves. As Spike, Alice, and Sprout are thought to be very closely related (with very similar genetic makeup), we speculated that fertilization with pollen from our first titan—Spike—to Alice would not occur: they were “self incompatible”—a term that often describes a plant species that is unable to be fertilized by its own pollen. So in addition to Spike’s pollen, we looked for genetically different pollen. Fortunately, the Denver Botanic Gardens also had a titan arum (“Stinky”) in bloom last year, and they sent us some of Stinky’s pollen, which we used to pollinate Alice.

After the pollination, Alice developed large, plump red fruits. These fruits were harvested and cleaned, and Deb Moore, part of the Garden’s plant production team, sowed the seeds. The result: about 40 quick-growing seedlings—each a single titan arum leaf

We decided to keep a few seedlings for our own uses, but we really wanted to share these young plants with the broader botanical community. We contacted institutions in the American Public Gardens Association to see if any would be interested in acquiring an Amorphophallus titanum.

We had great response. Seedlings were sent to 27 institutions (see Google map above), including the Cincinnati Zoo and Botanical Garden; the JC Raulston Arboretum at North Carolina State University; the Botanic Garden of Smith College in Northampton, Massachusetts; Ganna Walska Lotusland in Santa Barbara, California; the University of Idaho Arboretum and Botanical Garden in Moscow, Idaho; Smithsonian Gardens in Washington, D.C.; University of California-Davis Department of Plant Biology; and of course, three seedlings went to the Denver Botanic Gardens to grow alongside Stinky. 


©2016 Chicago Botanic Garden and my.chicagobotanic.org

Ooooh-ooh That Smell…

The first visitors to our latest corpse flower bloom give their impressions

Renee T. —  April 26, 2016 — Leave a comment

On Tuesday, April 24, #CBGSprout raised a big stink at the Chicago Botanic Garden! Our day included these snapshots of the early morning visitors to the rare phenomenon of a corpse flower in full bloom.

We chatted with the early birds and met some “regulars”—visitors who had come by to meet Spike, the Garden’s first titan arum on display last August, and Alice, the corpse flower that bloomed last September.

Kids visiting corpse flower bloom, wearing a corpse flower t-shirt.

Maxwell and Lexi (in her Alice T-shirt) Kirchen visit Sprout early this morning before school.

Baby visiting corpse flower bloom at the Chicago Botanic Garden.

Harper, 14 months old, waves at #CBGSprout the corpse flower.

Carrie Kirchen of Deerfield visited this morning, along with Maxwell, age 9, and Lexi, age 6.

Lexi: It smells horrible.

Maxwell: We found out on the Internet. The Internet knows everything.

Lexi: It’s very stinky.

Maxwell: It is a once-in-a-lifetime chance to see it. And it is very stinky.

Carrie: I happened to see the Facebook post. And we were here every day for Spike (a titan arum that previously was on display at the Garden).

Jamie Smith of Highland Park was here with Harper, 14 months old, as well as Susan and Jim Osiol of Mt. Prospect.

Jamie: We keep coming! Third time is the charm.

Susan: I’m obsessed. Our daughter called first thing this morning: ‘Mom, Sprout is blooming!’

Jim: It is vibrant. It’s a piece of nature that’s fascinating.

Visitors to titan arum Sprout at the Chicago Botanic Garden.

Megan and Daniel Ladror of Chicago

The first visitor to Sprout the titan arum on the morning after the bloom opened.

Emily Rosenberg of Highland Park was here when the doors opened at 6 a.m.

Megan and Daniel Ladror of Chicago analyzed the smell:

Daniel: This smells like our garbage at home after two days.

Megan: It’s such a rare event. I’m excited to see one without waiting in line.

Emily Rosenberg of Highland Park loved the bloom:

Emily: Beautiful. It is so interesting with the spathe (modified frilly leaf). It has great textures.

A visitor from the Czech Republic sniffs the window removed from the spathe for Sprout the corpse flower's pollination.

Roman Bouchal of the Czech Republic came for the smell this morning, and found it in the window removed from Sprout the corpse flower’s spathe for pollination.

Schoolteacher Jody Schatz reacts to Sprout the titan arum's smell.

Schoolteacher Jody Schatz will have something to share with her class at Reinberg Elementary School in Chicago.

Michelle and Haley Nordstrom, who live five minutes from the Garden:

Michelle (who was watching the livestream at the school bus stop with her daughter when she realized that Sprout was blooming; they jumped in the car): I took a photo of Sprout and sent it to my daughter’s school and said, “We’re going to be late.”

Visitors Roberta Stack, Joanna Wozniak, and Apple, age 7:

Roberta: I’ve been watching it in the camera and saw it open. I ran right down.

Apple: Pretty smelly.

Joanna: I’m catching a cheesey whiff. A bit of Parmesan.

Apple: It does kind of smell like cheese.


©2016 Chicago Botanic Garden and my.chicagobotanic.org

The Chicago Botanic Garden is on #TitanWatch. That’s right: if you visit the Garden’s Semitropical Greenhouse, you will see Sprout, the latest corpse flower from the Garden’s collection of 13 titan arums to begin a bloom cycle. 

PHOTO: Corpse flowers (Amorphophallus titanum) on display in a variety of life stages: in fruit, leaf, and bud.

Our corpse flowers (Amorphophallus titanum) are now on display in a variety of life stages: in fruit, leaf, and imminent bloom.

You might remember Spike and Alice in 2015: Spike failed to bloom but provided so much excitement; and Alice the Amorphophallus brought visitors to the Garden at all hours to see, and smell, a corpse flower in bloom. Now we are all watching Sprout to see if the corpse flower—known as a titan arum (Amorphophallus titanum)— will produce a huge, rotten bloom. Follow the progress of #CBGSprout on our corpse flower webcam and check our website for updates.

We learned a lot about corpse flowers in the last few months, and in the Semitropical Greenhouse, there are corpse flowers at three different stages on display: in the middle of a bloom cycle (Sprout); a non-blooming titan arum leaf; and a pollinated and fruiting titan arum (it’s Alice!). 

Here’s what you need to know as you watch Sprout grow:

  1. The corpse flower is one of the largest and rarest flowering plants in the world. It takes seven to ten years for a single corpse flower to produce a flowering structure (inflorescence). While other corpse flowers in cultivation have bloomed around the world recently, having more than one plant bloom in such a short time is uncommon. Watch for these signs the titan arum bloom is starting.
  2. Corpse flowers smell bad. Really bad. Peak stink time is usually very late at night.
  3. Speaking of night, that’s when corpse flowers usually bloom. And once they bloom, the bloom lasts 24 to 36 hours. Want a sneak peek? View our last titan arum bloom.
  4. If Sprout blooms, the Garden will stay open until 2 a.m. so visitors can experience the corpse flower bloom up close (last Garden entry will be 1 a.m.). Watch the live corpse flower webcam, check the blog (subscribe today), and follow the Garden on Facebook and #CBGSprout on Twitter to get the latest information. 
  5. Corpse flowers are BIG. In their natural habitats, they can reach 10 to 12 feet tall with a bloom diameter of 5 feet. In cultivation, they typically reach 6 to 8 feet in height, but all are different. 
  6. Corpse flowers are unpredictable. When the Garden was watching Spike, the first titan arum, even the horticulturists were surprised that the plant did not flower.
  7. Corpse flowers are native to Sumatra, but Sprout was grown here from seed the Garden received in 2008 from the University of California Botanical Garden at Berkeley. Learn about the titan arum’s native habitat.
  8. The corpse flower includes the corm, which may or may not go on to produce a flower; the spadix, which is the tall flower spike; the spathe, which is a single, frilly, modified leaf that enwraps the spadix; the petiole, which is the leaf stalk; and the branch-like rachis, which supports the many leaflets. Find more diagrams and information in our titan arum educator resourcesILLUSTRATION: Titan arum leaf parts diagram.
  9. Corpse flowers that bloom in the wild attract pollinators like carrion beetles and flesh flies. Once the plant is successfully pollinated, it develops olive-shaped, red-orange berries. Read more about titan arum pollination.
  10. Corpse flowers need protection. The Garden’s conservation work ensures that plants like these survive and thrive. Studying seeds from Sprout, Spike, and Alice enables scientists and horticulturists at universities, conservatories, and other institutions increase the genetic diversity of the species. See how we are studying our titan arum fruit.

PHOTO: The mature fruit of this Amorphophallus titanum is now being collected for seed.

The mature fruit of Alice the Amorphophallus is now being collected for seed.


We will be announcing extended viewing hours when #CBGSprout blooms. Spring is here, however—see what else is currently in bloom


©2016 Chicago Botanic Garden and my.chicagobotanic.org