Some of these ‘weeds’ are also sold in stores. Do NOT buy them!! We know the No Grow plants are weeds because of the vetting process called the Hawaii Pacific Weed Risk Assessment (HPWRA).
Many of these plants are beautiful, which is why they’re often bought by homeowners and landscapers. While these plants are (sometimes) manageable when contained in someone’s yard, they can grow out of control in the wild. They can take over the spaces of native plants and become a nuisance for everyone. It can be nearly impossible to contain a plant from spreading once it’s planted in your yard.
You can’t stop the birds from eating fruit and spreading viable seeds. You can’t stop the wind from blowing airborne seeds away from the parent plant.
Each No Grow plant has particularly harmful invasive traits such as: being shade tolerant, ability to produce viable seed that is either wind dispersed/dispersed by animals/ dispersed by water, be a prolific seed producer, and have seeds persist in the seed bank for more than a year. Plants on the no grow list are in the horticulture trade, be agreed upon by stakeholders, and have naturalization records in the state.