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Trees of Central Texas
by Keith Brown
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About Keith Brown
●been in tree care entire working life●somewhat active climber●Board Certified Master Arborist●member ASCA●Current president for ISA Texas Chapter●Owner of Austin Tree Experts●City of Rollingwood Arborist●16 years in the tree business
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Understand the Land / Environment
●Austin has very diverse micro-environments●Environment is 90% of tree size and lifespan●hill country, east black gumbo, the "austin
bowl", sandier soils in Roundrock
General Info:●34" Rain per year●Hardiness Zone 8●AHS heat zone 9●We are "Temperate Mixed Forest"
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Over 100 Species of Trees
●Primarily broadleaf (angiosperm,hardwood)●Very few Conifers (gymnosperms,softwoods)
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What is Native?
If a native american indian moved a tree from one part of the continent to another, would we say that tree is native to the new area?
We don't have records that old.
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Fruit Trees
●fig●pear●loquat●peach●plum●persimmon●avocado?●citrus - best in a pot on the patio (cold)
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Conifers (aka christmas trees)
●Bald cypress / montezuma cypress●Arizona cypress●Eastern red cedar●Italian cypress●Arborvitae
DO NOT PLANT LEYLAND CYPRESSthe heat will eventually kill them.
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Shade Trees
Mexican Sycamore
&
Bur Oak
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Fast Growing Trees
Mexican Sycamore is the only one I endorse. Most others have high maintenance requirements, structural integrity issues and short life span.
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Fast Enough Growing Shade Trees
●Bur oak●Red oak●Live oak●Monterrey oak●Chinquapin oak●Cedar Elm●Crepe myrtle●Gingko●Pecan
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The Old Men
Only a few central Texas trees have the capacity to outlive generations of people:●Bald cypress●Live oak●Pecan●Bur oak
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Hard to Identify Trees
●Live oaks●Bur and Post oaks●Walnuts and Pecans●Eastern red cedar and ash juniper●Escarpment black cherry●Lesser common oaks
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Live Oaks : virginiana vs. fusimormis
●virginiana we call "coastal." Faster growth rate. Straighter branches. Growing in the perfect spot. Probably don't live as long.
●fusimormis we call "escarpment." These are our native oaks. Twisted trunks. Very old trees. Grow fast in maintained landscapes, but slow by mother natures will.
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Bur Oaks and Post Oaks
Bur oak Post oak
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Black Walnut and Pecans
walnut pecan
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Eastern Red Cedar and Ash Juniper
Red Cedar Ash Juniper
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Escarpment Black Cherry
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Lesser Common Oaks
Oaks are "promiscuous." The hybridize pretty readily. These trees are easily confused:
●drummond post oak - scaley bark, grows tall●white shin oak - scaley bark, grows to 15'.●blackjack oak - bark like red oaks, leaves
like post oak.
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Drummond Post Oak
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Questions?