Invasive Herbs In The Garden
Hey everyone, and Happy Herb Sunday! In this series you will learn about herbs and how they grow and how you can use them. From shaping to freezing I hope you learn something new everyday.
Today we are learning about invasive herbs/ plants. They are able to grow quickly, and can spread to the point of disrupting other plants.

Today we are learning about invasive herbs/ plants. They are able to grow quickly, and can spread to the point of disrupting other plants.
An “invasive species” is defined as a species that is
Non-native (or alien) to the ecosystem under consideration;

Examples of Invasive Plants/Herbs
Why are invasive plants successful?
Many invasive plant species produce large quantities of seed.
Many invasive species thrive on disturbed soil.
Invasive plant seeds are often distributed by birds, wind, or unknowingly humans allowing seed to moving great distances.
Some invasives have aggressive root systems that spread long distances from a single plant.
These root systems often grow so densely that they smother the root systems of surrounding vegetation.
Some plant species produce chemicals in their leaves or root systems which inhibit the growth of other plants around them.
What are the impacts of invasive plant species?
Invasive species have contributed to the decline of 42% of U.S. endangered and threatened species, and for 18% of U.S. endangered or threatened species, invasives are the main cause of their decline.
Invasive species compete directly with native species for moisture, sunlight, nutrients, and space.
Overall plant diversity can be decreased
Establishment and spread of invasive species can degrade wildlife habitat
Results in poor quality agriculture lands
Degraded water quality
Increased soil erosion
Invasive Plants In Hawaii

ALBIZIA (FALCATARIA MOLUCCANA)
Hawaii Pacific Weed Risk Assessment: 8, High Risk

FALSE KAVA / FALSE ʻAWA (PIPER AURITUM)
Hawai‘i-Pacific Weed Risk Assessment Score: 15 High Risk.

HIMALAYAN BLACKBERRY (RUBUS DISCOLOR; SYN:RUBUS ARMENIACUS)
Hawaii Pacific Weed Risk Assessment: 24 High Risk

SMOKE BUSH (BUDDLEJA MADAGASCARIENSIS)
Hawaii Pacific Weed Risk Assessment: 7 High Risk
Here are a few things that you can do to fight invasive plants and preserve the plant species native to your region: Do not pick the flowers of noxious weeds and take them home.
Drive only on established roads and trails away from weed infested areas.
When using pack animals, carry only feed that is certified weed free.
Remove weed seeds from pack animals.
Don’t pick and transport wild flowers that you can’t identify.
Do not camp or drive in weed infested areas.