Native Plants
![](../_images/smarty_plants.gif)
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
![](../_images/mr_smarty_plants_logo_web_200w.jpg)
rate this answer
![](../_images/star_00.gif)
Monday - July 28, 2014
From: Lebanon, IL
Region: Midwest
Topic: General Botany, Shrubs, Trees
Title: Is Viburnum rufidulum monoecious or dioecious?
Answered by: Nan Hampton
QUESTION:
Is Viburnum rufidulum monoecious or dioecious? Your database does not address this for most plants.ANSWER:
According to the chart in Tree Sex: Gender & Reproductive Strategies from Warnell School of Forestry and Natural Resources, The University of Georgia, Viburnum rufidulum (Rusty blackhaw viburnum) is neither monoecious (male and female reproductive structures on the same plant but in separate flowers) or dioecious (male and female reproductive structures on separate plants). It is cosexual or hermaphroditic (male and female structures together in the same flower).
More General Botany Questions
USDA Hardiness Zones
January 22, 2015 - Some natives are listed as ZONE 3 - 7. Would they be ok in zone 9. I thought the zones related to cold hardiness. What does the higher number mean, exactly?
view the full question and answer
Purple leatherflower with white bloom
July 17, 2014 - A couple of years ago at the wildflower center native plant sale I bought a purple leatherflower according to the tag. This is the first year it has bloomed and the blooms are pure white. The shape ma...
view the full question and answer
Native plants as accumulators of heavy metals in Texas
March 29, 2008 - I would like to know of any native plants that could be used as hyperaccumulaters of heavy metals in Texas.
view the full question and answer
What to do about grass dying under pin oaks in Iowa
December 10, 2008 - We have 2 pin oaks about 15 years old in our front yard. The grass has started dying out under and around them. What can we do?
view the full question and answer
Official definition of native plants
March 06, 2008 - Does the Wildflower center have an official definition of "native" plants?
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |