En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Spots on leaves of Esperanza from Dallas

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

Wednesday - May 30, 2012

From: Dallas, TX
Region: Southwest
Topic: Pests, Shrubs
Title: Spots on leaves of Esperanza from Dallas
Answered by: Barbara Medford

QUESTION:

Have a new 1 foot high Esperanza. It is flowering OK (so far) but it has small rust colored spots about the size of a B-B all over most of the leaves. On the top side of the leaf the spot is depressed in to the leaf and on the bottom side it bulges out. To look at it makes you think of smallpox. Some leaves are yellowing. It has pretty good drainage but I don't know how much to water it. We're not getting much rain but it gets a little squirt from the sprinkler system once a week.

ANSWER:

From our webpage on Tecoma stans (Yellow bells) here is some information on growing conditions for this plant:

"Varieties sold in nurseries may be from tropical stock and not do so well in US cold. Yellow bells is drought tolerant and Southwestern varieties are adapted to monsoon rains with dry spells between. They may flower better if such conditions are emulated in planned landscapes, so allow ground to dry out between waterings."

Since you say it is a new plant, we are wondering when it was planted. One of the biggest problems for woody plants, especially in hot Texas, is transplant shock. We recommend that woody plants, trees and shrubs, be planted in cooler weather, like November to January, while they are dormant.

Please follow the plant link above to learn the soils, sun and watering it likes. The "squirt" from the sprinkler might not be what it needs, but a hose stuck down in the soil and allowed to drip slowly until water appears on the surface about once a week. Also on that webpage, go all the way down to Additional Resources at the bottom of the page. We clicked on the "Search USDA Plants for (plant name). States in green on the map you will get are those where the plant in question is native, usually the first thing we check on. You can click on that state, and get a map of the counties where that plant is native. Here is the USDA Plant Profile Map for Esperanza, showing that it is not native to Dallas County, but is more concentrated in far West Texas. And, again, it may be a hybrid or non-native species from a nursery.

In that same Additional Resources area at the bottom of our webpage there is a link to Google on the plant, which we will use to see if we can find information on an insect pest that might be causing the bumps on the leaves. In the process we found one of our own previous Mr. Smarty Plants questions, which we believe about covers it.

 

From the Image Gallery


Yellow bells
Tecoma stans

Yellow bells
Tecoma stans

Yellow bells
Tecoma stans

More Shrubs Questions

Plants for northern exposure in Wichita, KS
March 17, 2009 - What are good plants for the north side of the house with acidic soil in Zone 6, Wichita, KS?
view the full question and answer

Nutrient imbalance in Tecoma stans
October 18, 2007 - I have two Tecoma stans on the north-east side of my yard. They have grown very tall (5') but have not bloomed all summer. Last summer they bloomed profusely. Any idea what the problem might be?
view the full question and answer

Small native evergreen shrubs for North Carolina
May 17, 2007 - I live in zone 7 and need miniature shrub to go in flower bed situated in full sun. I love gardenias but afraid the intensity of the sun might be too much.
view the full question and answer

Winter-interest plants in Wynnewood PA
July 11, 2010 - Could you please suggest flowering plants that provide winter interest after drying out (ie with seed pods or interesting dried flower heads)? I'm looking for something that grows in full sun. Thank ...
view the full question and answer

Native Plant Suggestions for Dripping Springs
August 02, 2011 - I have a very dry commercial property in Dripping Springs TX where the dry sand/dust isn't a good rain conductor (whenever we get rain). What can we plant there? We have no irrigation and use a rai...
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