Host an Event Volunteer Join Tickets

Your gift keeps resources like this database thriving!

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
1 rating

Sunday - December 18, 2005

From: Saint Louis, MO
Region: Midwest
Topic: General Botany
Title: Consequences of leaving geranium in dark room
Answered by: Nan Hampton and Joe Marcus

QUESTION:

What would happen to a geranium plant that was left to grow in a dark room for many days?

ANSWER:

Light is necessary for photosynthesis, the process by which the plant makes its food. If a geranium plant (or any other green plant) is grown in the dark, it will become tall and spindly and turn pale and yellow. This phenomenon is called etiolation. The plant will be putting its energy into lengthening to try to find light so that it can photosynthesize and putting very little energy into making chlorophyll; thus, it grows tall and loses its green color. Left in the dark long enough, it will die because it cannot photosynthesize to produce energy for cell division and growth.
 

More General Botany Questions

What does the name montana mean in a species name?
August 21, 2015 - What does the name montana mean in a species name?
view the full question and answer

Smarty Plants on temperature
October 18, 2005 - Mr.Smarty Plants, I am a student at Hill Freedman Middle school and I have a science fair coming up. I really need a answer to this question "What effect does temperature have on the growth of plants...
view the full question and answer

Source for DNA sequencing of Opuntia species
March 04, 2014 - Hi Mr. Smarty Plants, I am trying to do a Opuntia speciation study, and rather just identifying the species by morphological comparison, I would also like to go a little deeper by comparing the DNA...
view the full question and answer

Failure of flameleaf sumacs to produce fruit
January 09, 2013 - Our two flame leaf sumacs produce none to little fruit. Both are about 4 years old, quite large, healthy looking; flowering this year was very good, but no fruit. What keeps them from producing fruit?
view the full question and answer

Weak stems on asters and ironweed from Woodbridge ON
June 06, 2012 - My question is in regards to plants flopping over. My smooth asters and ironweeds never seem to have strong stems. Is because the soil is too fertile or maybe too shallow?
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.