Rent Shop Volunteer Join

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?

Share

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
Not Yet Rated

Saturday - March 30, 2013

From: Gilbertsville , PA
Region: Mid-Atlantic
Topic: Diseases and Disorders, Trees
Title: Is yellow tulip poplar alive from Gilbertsville PA
Answered by: Barbara Medford

QUESTION:

How can I tell if my yellow tulip poplar is alive? thank you

ANSWER:

The best way to tell if any tree or woody plant is alive is the thumbnail test. We are assuming that your Liriodendron tulipifera (Tulip tree) has put out no leaves nor blooms; it ordinarily blooms green, yellow and brown from April to June. If you follow our plant link to the webpage on your tree you will find these growing conditions:

"Growing Conditions

Water Use: Medium
Light Requirement: Sun , Part Shade , Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
CaCO3 Tolerance: Low
Soil Description: Rich, moist soils.
Conditions Comments: Tulip tree is insect and disease free. It is intolerant of compacted soil and should not be placed in confined beds or planters near pavement. It grows very rapidly in deep, rich well-drained soils with uniform rainfall. Dry summer weather causes physiological problems. Tulip tree drops its foliage in response to drought and is somewhat weak-wooded."

According to this USDA Plant Profile, your tree does grow natively in Montgomery County in southeast Pennsylvania.

Now, the thumbnail test. With your thumbnail and beginning at the highest branch you can reach, make a very thin scraping of the outer bark. If there is a very thin layer of green beneath that outer bark, that branch, at least, is alive. If there is no such green layer,  continue farther down the tree in search of the green. If you can't find any, even down close to the roots, that tree is dead.

Okay, you probably want to know what it died of (if it is, indeed, dead). Honestly, we don't know, but here is a website from the Missouri Botanical Garden on the tree with some infomation on problems and diseases.

 

From the Image Gallery


Tulip tree
Liriodendron tulipifera

Tulip tree
Liriodendron tulipifera

Tulip tree
Liriodendron tulipifera

More Diseases and Disorders Questions

Loss of blooms in potted plants in Hawaii
November 11, 2007 - My lanai is in strong afternoon sun and no matter what "full sun" plants I try to grow they quickly stop blooming. Plumeria, Hibiscus, Echinacea, even Bougainvillea...they continue to grow but lose...
view the full question and answer

Problems with wax myrtle in Roanoke, VA
August 20, 2009 - Our Wax Myrtle bushes tend to lose all their foliage during the Winter months and each year seem to flesh out their leaves less with each passing Spring. One bush never returned and save for one branc...
view the full question and answer

Spots on persimmon tree leaves from Dripping Springs TX
July 10, 2013 - We are in rural Hays County Texas off Hamilton Pool Rd Texas. Large persimmon trees are turning yellow, blackish spots on underside of leaves. What do we do?
view the full question and answer

Information about giant yellow and black wasps
September 13, 2008 - Regarding a previous question submitted by a person asking about the giant yellow and black wasps..It's a Cicada Killer.I used to see them all the time when I was a kid in Victoria, Tx..But I haven'...
view the full question and answer

Cenizo dropping leaves from Corpus Christi TX
February 20, 2014 - Leucophyllum frutescens:I planted a Texas sage hedge in September of 2012. One of the plants is dropping its leaves. It is situated at the corner of an L-shape at the end of drive and corner of road. ...
view the full question and answer

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