News and Press


All News


More Tweets

Permits/Licenses
State Beach Season Passes
Air Pollution Control Preconstruction Permits
Air Pollution Control Operating Permits
Freshwater Wetlands
OWTS (Septic) Permitting
OWTS (Septic) Licensing
Stormwater Permitting Info
All Other Water Permits
Aboveground Storage Tank Registration
Underground Storage Tanks
Permitted Waste Transporters
Online Hunting/Fishing/Boating
Boating/Fishing/Hunting
Rec Freshwater Fishing Licenses
Rec Saltwater Fishing Licenses
Marine Fisheries License Renewals
Shellfish Harvester Certification
Boat Registration Renewal
Berthing & Land Management Customer Portal
Online Renewals/Fee Payments
Agriculture Product Permit Renewals
RIPDES Permit Annual Fee Payment Service
Hazardous Waste Transporter Permit Renewals
Medical Waste Generator Registration
UST Registration Renewal
Marine Fisheries License Renewals
Dental Amalgam Containing Mercury Waste Recycling Annual Report Form
Online Permit Searches
OWTS (Septic) Permits
Wetlands Permits
Water Quality Certifications / Stormwater Permits
Multi-Sector General Permits
Non-Contact Cooling Water Permits
Remediation General Permits
Other Resources
Application Forms
Permit Application Center
Request a File Review
Rules and Regulations
Weeding Tips

Hand-pulling is very effective in a densely planted area such as a vegetated stormwater system.

Remove roots. It is not enough to remove the portion of the plant that is aboveground–often weeds will sprout back from roots left buried in the soil. If hand-pulling is leaving roots behind, consider grabbing a garden hoe or trowel. Or plan to weed the area after watering or rainfall when the soil is moist.

Don’t let it go to seed. Remove a plant before it has the chance to flower and go to seed, giving new weeds the opportunity to sprout everywhere. The seeds of species like garlic mustard will continue to mature even after the plant has been pulled.

Herbicides may be needed on particularly aggressive invasive plants. This MUST be done by a certified applicator using the least amount of chemical necessary. Applying the herbicide to the freshly cut stem near ground level is safest. Do not apply herbicide when plants are in flower.

Bag it up. Many invasive plants can resprout if they have contact with soil, so drying them out on a paved surface or bagging them for disposal is important. Many plants can form roots when their stems are left in contact with soil. Japanese knotweed can root from just a fragment of stem. ALWAYS bag and remove any invasive plants you pull.

Tools to have on hand: work gloves, knee pads, full-sized and hand-held garden hoes, flat shovel, and trash bags.

Revegetate. The removal of invasive plants or weeds opens up the newly-exposed soil for invasion, so replanting is important. Be prepared to replace those weeds or invasive species with a native plant that will be well-suited to the garden that you are maintaining. Head to the Rhode Island Coastal Plant Guide and use the drop-downs to specify the site conditions of the bioretention area. This will generate a list of appropriate native plants from which to choose.


DON’T SPREAD IT!

Thwart these expert invaders by keeping field gear clean and thoroughly removing plant matter from sites:

Purple loosestrife and Japanese stiltgrass have tiny seeds that stick to shoes, tools, and especially equipment tires.

Mugwort is spread by root fragments, sometimes existing in soil brought to an area. Check soil source!

Japanese knotweed can root from as little as a fragment of the stem, so mowing is not recommended.

More About Herbicides and Pesticides

Pesticide Safety & Integrated Pest Management Training is conducted by URI to prepare for certification by RIDEM. dem.ri.gov/programs/agriculture/safety-ipm.php

Rhode Island Pesticide General Permit, applies to pesticide use patterns that result in discharge of pesticides to Waters of the State. dem.ri.gov/programs/benviron/water/permits/ripdes/pdfs/pestgenperm.pdf

Pollinator Working Group, or The Working Group to Make Findings and Recommendations with Regard to Maintaining, Protecting and Enhancing Pollinator Habitat and Health in Rhode Island, provides guidance for the use of pesticides around pollinators. dem.ri.gov/programs/agriculture/pollinator-working-group.php