Post Oak Savannah

The Post Oak Savannah lies just to the west of the Pineywoods and mixes considerably with the Blackland Prairies area in the south. This area includes the entire Claypan land resource area of Texas, which is part of the Southern Coastal Plains. The Post Oak Savannah, a gently rolling, moderately dissected wooded plain, is the home biota of Texas A&M University. Upland soils are gray, slightly acid sandy loams, commonly shallow over gray, mottled or red, firm clayey subsoils. They are generally droughty and have claypans at varying depths, restricting moisture percolation. The bottomland soils are reddish brown to dark gray, slightly acid to calcareous, loamy to clayey alluvial.


Thumb Species Characteristics

Abronia fragrans
Fragrant verbena, Sand verbena, Snowball, Snowball sand verbena, Sweet sand-verbena

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Dry

Acer negundo
Box elder, Box elder maple, Ash-leaved maple, Ashleaf maple, Red River maple, Fresno de guajuco

Duration: Perennial
Habit: Tree
Light: Sun
Water: Moist

Acer rubrum var. drummondii
Drummond's maple, Drummond red maple, Swamp maple

Duration: Perennial
Habit: Tree
Light: Part-shade
Water: Wet, Moist

Achillea millefolium
Common yarrow, Western yarrow, Yarrow, Milfoil

Duration: Perennial
Habit: Herb
Light: Sun, Part-shade
Water: Dry

Aesculus glabra var. arguta
Ohio buckeye, White buckeye, Texas buckeye

Duration: Perennial
Habit: Tree
Light: Part-shade
Water: Wet, Moist

Aesculus pavia var. flavescens
Texas yellow buckeye, Yellow woolly buckeye, Pale buckeye, Plateau yellow buckeye

Duration: Perennial
Habit: Shrub, Tree
Light: Part-shade
Water: Moist

Aesculus pavia var. pavia
Scarlet buckeye, Red buckeye, Southern buckeye, Firecracker plant

Duration: Perennial
Habit: Shrub, Tree
Light: Part-shade
Water: Moist, Dry

Allium canadense var. canadense
Canada onion, Meadow garlic, Wild onion

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Dry

Allium canadense var. mobilense
Meadow garlic, Wild onion

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Dry

Allium coryi
Yellow-flowered onion, Yellowflower onion

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Dry

Allium drummondii
Drummond's onion, Wild Garlic, Drummond wild onion

Duration: Perennial
Habit: Herb
Light: Sun
Water: Dry

Alophia drummondii
Propeller flower, Purple pleat-leaf, Pinewoods lily, Prairie iris, Pleatleaf iris

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Dry

Aloysia gratissima
Whitebrush, Bee-brush, White-brush, Common bee-brush, Beebrush, Privet lippia

Duration: Perennial
Habit: Shrub
Light: Sun, Part-shade
Water: Moist

Amorpha fruticosa
Indigo bush, False indigo bush, False indigo, Desert false indigo

Duration: Perennial
Habit: Shrub
Light: Sun, Part-shade
Water: Moist

Ampelopsis cordata
Heartleaf peppervine, Heart-leaf ampelopsis

Duration: Perennial
Habit: Vine
Light: Part-shade
Water: Dry

Amsonia illustris
Ozark bluestar, Showy blue-star, Missouri blue star, Swamp bluestar

Duration: Perennial
Habit: Herb
Light: Part-shade
Water: Moist

Andropogon gerardii
Big bluestem, Tall bluestem, Turkeyfoot

Duration: Perennial
Habit: Grass/Grass-like
Light: Sun, Part-shade
Water: Moist

Andropogon glomeratus
Bushy bluestem, Brushy bluestem

Duration: Perennial
Habit: Grass/Grass-like
Light: Sun
Water: Wet, Moist

Andropogon ternarius
Splitbeard bluestem

Duration: Perennial
Habit: Grass/Grass-like
Light: Sun, Part-shade
Water: Dry

Andropogon virginicus
Broomsedge, Broomsedge bluestem, Yellowsedge bluestem, Whiskey grass, Popotillo pajon

Duration: Perennial
Habit: Grass/Grass-like
Light: Part-shade
Water: Moist

Aphanostephus skirrhobasis
Lazy daisy, Arkansas lazy daisy, Arkansas doze-daisy

Duration: Annual
Habit: Herb
Light: Sun
Water: Dry

Aristolochia serpentaria
Virginia snakeroot, Virginia dutchmanspipe

Duration: Perennial
Habit: Herb
Light: Shade
Water: Dry

Aristolochia tomentosa
Woolly Dutchman's pipe, Common Dutchman's pipe

Duration: Perennial
Habit: Vine
Light: Part-shade
Water: Moist

Asimina triloba
Pawpaw, Common pawpaw, Custard apple, Indian banana, Wild banana

Duration: Perennial
Habit: Tree
Light: Sun, Shade, Part-shade
Water: Moist

Asplenium platyneuron
Ebony spleenwort

Duration: Perennial
Habit: Fern
Light: Shade, Part-shade
Water: Moist

Astragalus crassicarpus
Groundplum milkvetch, Ground plum