En EspaŅol

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
Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.
 
rate this answer
Not Yet Rated

Saturday - October 20, 2012

From: Stockton, CA
Region: California
Topic: Non-Natives, Diseases and Disorders, Pests, Edible Plants, Trees
Title: Spots on non-native naval orange trees from Stockton CA
Answered by: Barbara Medford

QUESTION:

I have two mature Navel Orange trees. One tree has developed spotty chlorophyl depleted areas that were not on the oranges when they were smaller. In addition, the oranges on both trees are smaller , by half, than normal for this time of year. Tanglo and Lemon on both sides show no sign of this problem..It really looks like something is eating small areas of chlorophyl.

ANSWER:

Citrus x sinensis means it's not from around here, not even in California. Orange trees probably originated in Southeast Asia and were cultivated in China by 2500 BC. We always want to know where a plant is native, because that helps us know in what soils, rainfall and climate it grows well. The Lady Bird Johnson Wildflower Center, home of Mr. Smarty Plants, is dedicated to the growth, protection and propagation of plants native not only to North America but to areas where those plants grow naturally.

Even though we will have no information in our Native Plant Database on oranges, we will try to find some websites that might give you some clues:

University of Florida Extension Citrus Black Spot Symptoms in Brazil.

San Francisco Chronicle Citrus Fruit with Black Spots

To get information on a plant that is not necessarily native but does grow locally, we suggest you contact the University of California Cooperative Extension Office in San Joaquin County.

 

 

More Edible Plants Questions

Native Fruits for Texas Hill Country
March 31, 2009 - Can you recommend a species of blackberry for San Antonio or any other fruit that will be compatible in my garden? (mostly Hill Country Native, thanks to Ladybird). The local store has raspberries, bu...
view the full question and answer

Edible plants in Western Pennsylvania
October 02, 2008 - Can you please give me a list of five edible plants in Western Pennsylvania and the seasons in which they are available?
view the full question and answer

Growing fruits and vegetables from Holbrook NY
April 06, 2012 - I have been looking for information on what plants, vegetables and fruits can be grown on Long Island NY to provide a sustainable food source for a community in the event of food becoming scarce. Wha...
view the full question and answer

Identification of a vine in El Paso, Texas
November 23, 2012 - I live in Del Rio Texas - Zone 8/9 and I have a vine which can't be identified. It looks like a morning glory white flower with crimson throat, but the leaf pattern is like a 5-7 fingered hand with d...
view the full question and answer

Negative and positive effects of invasive dandelions from Rama Ontario
January 12, 2012 - How do Dandelions have a negative impact of being a invasive and a Positive impact of being a invasive species ?
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center