This large, clump-forming grass is one of the fastest growing terrestrial plants in the world---growing 4” a day and up to 20 feet tall!  Arundo donax is also known as "giant reed." Arundo g … [Read more...]

  Fireweed (Senecio madagascarensis) is a bright yellow-flowering, daisy-like weed that looks a bit like a cross between the common garden wedelia and a dandelion.  But don't be fooled by … [Read more...]

It may look benign growing in your yard, but Sphaeropteris cooperi, the Australian Tree Fern, is a major invader in the forest.  This is a popular ornamental because it so easy and fast to grow … [Read more...]

  Have you seen this plant?  On the Hawaii State Noxious Weed List: Ivy gourd (Coccinia grandis) is a fast-growing, aggressive vine that smothers anything in its path. It rapidly covers … [Read more...]

Our invasive plant of the week is wood rose (Merremia tuberosa), photographed above in December, 2018 along a roadside near Anini Beach on Kauai.  This attractive vine was introduced for horticultural … [Read more...]