Here are a few links to PDF files the you can download.
Houston Chapter of Native Plant Society of Texas native plant information pages. Includes the following topics plus more:
Sources of Native Plants in the Houston Area
Native Host Plants for Southeast Texas Butterflies
Native Vines for the Houston Area
Native Plants for Erosion Control
Native Plants that Provide a Food Source for Hummingbirds
Drought Tolerant Native Plants
Native Trees
Native Shrubs
Trees that Attract Birds
Native Plants for Shady Areas
Native Plants that Provide Food, Shelter and Nesting for Birds
Native Ground covers
http://npsot.org/wp/houston/fi...
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Aquatic Plants from Gulf Coast Turtle & Tortoise Society
Contains photos and brief info on 15 different beneficial native aquatics
http://www.gctts.org/files/Nat...
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Recommended Native Plants for Hill Country Landscaping prepared by Kerrville Chapter of the Native Plant Society of Texas
Extensive list of natives.
http://www.npsot.org/Kerrville...
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A Guide to Using Texas Native Plants from Irvine Parks and Recreation Dept.
Nice brochure with color photos and info on "Irving's top 50 plants that support the environment"
http://cityofirving.org/docume...
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Recommended Native and Adapted Plants for Boerne
from Native Plant Society of Texas – Boerne Chapter
http://npsot.org/wp/boerne/fil...
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Recommended List of Native Plants for Landscape Use in North Central Texas
from North Central Chapter of the Native Plant Society of Texas
http://www.txnativeplants.org/...
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Butterflies
Native Host Plants for Southeast Texas Butterflies
This page is included in Houston Chapter of Native Plant Society of Texas native plant information pages shown in the link at the top of the page.
http://www.naba.org/chapters/n...
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Butterfly Plants for the Lower Rio Grande Valley
http://www.naba.org/ftp/butter...
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Butterfly Gardening with Native Plants of the Lower Rio Grand Valley
http://www.nativeplantproject....
