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Transcript of Houston Invasives
City of Houston
Parks and Recreation Dept. Non-native species Cultivated Casual Aliens Naturalized species that do not reproduce or spread from area of first initial introduction, deliberately introduced may reproduce occasionally, does not spread far from parents, accidental or deliberate introduction species that reproduce and spread without human assistance, accidental or deliberate introductions Invasive Species Produce reproductive offspring, often in large numbers
Potential to spread
Introduction does or is likely to cause environmental or economical harm or harm to human health (Executive Order 13112 1999) Chinese Tallow Tree
Triadica sebifera Chinese Privet
Ligustrum sinense Glossy leaf Privet
Ligustrum japonicum Japanese Honeysuckle
Lonicera japonica Bahia grass
Paspalum notatum King Ranch Bluestem
Bothriochloa ischaemum Johnson grass
Sorghum halapense Invasive Species Why? Threaten native species
Cause economic harm
Alter native ecosystems Deliberate
Imported soil, nursery stock
Travel on people, animals Prevention
Early Detection and Rapid Response
Control and Management
Protection and Recovery How? What can we do? QUESTIONS?