Blue Ridge PRISM

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Blue Ridge PRISM Blue Ridge PRISM is the statewide leader for education and training on invasive plants in Virginia.

Join us and learn how to be better stewards of this land we love.

⭐️ Partner Spotlight: ReLeaf Cville — Saving trees to save lives👏🏻 ReLeaf Cville is rooted in a simple truth: Trees save...
29/05/2026

⭐️ Partner Spotlight: ReLeaf Cville — Saving trees to save lives

👏🏻 ReLeaf Cville is rooted in a simple truth: Trees save lives — so we save trees. We protect Charlottesville's health by expanding and maintaining the tree canopy, focusing on neighborhoods impacted by rising heat as the climate changes. We do this by planting trees, preserving mature trees, and educating the next generation of environmental leaders.

🌿 Invasive plants threaten the trees we plant by outcompeting them for resources, straining their branches, and blocking sunlight. Aggressive vines and groundcovers deprive trees of nutrients and can become a physical hazard, making the tree susceptible to disease or toppling in high winds. By identifying and removing invasive plants, we ensure the trees we plant grow strong, provide shade, and benefit homeowners and wildlife in our city.

🌳 Blue Ridge PRISM is a key partner that helps us educate our Green Team to identify invasive species and advise on their removal. “We rely on PRISM people and printed resources to lend expertise, helping to educate our Green Team and the wider community about invasive management,” said Cathy Boyd, ReLeaf Cville Executive Director. “We look forward to their participation as a community partner in Cville Tree Week, Charlottesville's first-ever community celebration of trees, November 1-7, 2026."

👉🏼 Learn more about ReLeaf Cville and their programs here: https://www.releafcville.org/
Join us for Cville Tree Week, November 1-7, 2026.

Photos courtesy of RCA:
• A Green Team member learns how to climb trees like a professional arborist.
• Green Team members learn about invasives that compromise tree health.
• The Green Team gathers before planting trees in the Woolen Mills.

Virginia Invasive Plant Coalition

🔥 Join our webinar on Virginia's 6 "five-alarm-fire" species today at noon!🥪 In our FREE "brown bag" webinar, learn abou...
28/05/2026

🔥 Join our webinar on Virginia's 6 "five-alarm-fire" species today at noon!

🥪 In our FREE "brown bag" webinar, learn about the "five-alarm fire" plants that are sweeping across Virginia’s landscapes with the potential for ecological devastation.

🔎🪏 We'll focus on how to identify and control these 6 invasive plants and why it's essential to make them your top priorities if you find them on the land you steward.

👉🏼 Register here: https://us02web.zoom.us/webinar/register/WN_yqaIVOY4T9WrNBHThs2Oyw

Virginia Invasive Plant Coalition

🌿 W**D IT WEDNESDAY: Wavyleaf grass  (Oplismenus undulatifolius)This fast-spreading perennial can carpet the forest floo...
27/05/2026

🌿 W**D IT WEDNESDAY: Wavyleaf grass (Oplismenus undulatifolius)

This fast-spreading perennial can carpet the forest floor, shading out ephemeral wildflowers, ferns, and other understory plants, and preventing tree seeds from germinating. In late May, look for low-growing patches in shaded woods, especially along trails, streams, bottomlands, and moist forested slopes.

🔥 Learn more tomorrow during our "6 Five-Alarm-Fire Plants" Webinar. Register here: https://us02web.zoom.us/.../WN_yqaIVOY4T9WrNBHThs2Oyw...

🔎 ID:
• Low-growing, trailing grass usually 6–12 inches high, with arching stems
• Medium- to deep-green leaves, 2–4 inches long, and distinctly wavy from side to side like Ruffles potato chips
• Leaf bases touching stems but not wrapping around them
• Stems covered with short white hairs
• White flower spikelets with dark purple awns — sharp, narrow, pointed seeds — in July continuing into fall

🪏 Control:
• Hand-pull small populations, removing all stolon fragments to prevent resprouting.
• Remove tiny seedlings, which look like miniature mature plants.
• Leave plants pulled before seed to dry and decompose.
• For large infestations, use a grass-specific herbicide, such as clethodim, from April through June except near wetlands or streams. In wet areas, use aquatic-safe glyphosate.
• Complete treatment before seed set.
• Do not walk through wavyleaf or allow pets to do so when it is in seed — awns are very sticky!
• Clean boots, clothing, pets, and equipment carefully after working in wavyleaf.
• Monitor for several years — missed plants, seedlings, and fresh introductions may require follow-up treatment.

👉🏼 Further information:
• Fact sheet:https://static1.squarespace.com/static/6727dc893768d62b217ee6fd/t/673309571d5e7e69e90e33ed/1731397977928/Wavyleaf-Factsheet-2021-9-9-v1-FINAL+%281%29.pdf
• Webinar — "The problem with wavyleaf grass": https://www.youtube.com/watch?v=fwbe-DzYcYY

Photo credits:
Forest — Kerrie L. Hyde, Maryland Department of Natural Resources, Bugwood.org
Dog — Vanessa Beauchamp

🔥 Join our webinar this Thursday to learn about 6 invasives blazing across Virginia!🥪 These 6 "five-alarm fire" plants a...
26/05/2026

🔥 Join our webinar this Thursday to learn about 6 invasives blazing across Virginia!

🥪 These 6 "five-alarm fire" plants are sweeping across the state with the potential for ecological devastation — incised fumewort, lesser celandine, Japanese knotweed, Oriental bittersweet, two-horned trapa, and wavyleaf grass (in the order shown above).

🔎🪏 Our "brown bag" webinar on 5/28 at noon will focus on how to identify and control these 6 invasive plants and why it's essential to make them your top priorities if you find them on the land you steward.

👉🏼 Register now: https://us02web.zoom.us/webinar/register/WN_yqaIVOY4T9WrNBHThs2Oyw



🌿 Last year our Retail Garden Center Survey found ~700 invasive plants during 128 visits!🌸 If you see invasive plants at...
23/05/2026

🌿 Last year our Retail Garden Center Survey found ~700 invasive plants during 128 visits!

🌸 If you see invasive plants at your garden center this weekend, let us know! For the 2nd year, we’re conducting a statewide survey of invasive plants for sale at local nurseries. When you visit a retail garden center, fill out the survey form linked below. It works on your smartphone and you can upload photos too!

👉🏼 Submit a survey: https://airtable.com/appPQRyWLC8vLR9U6/pag5YjTU9Op7zlR0h/form

🔎 See the results of the 2025 Annual Virginia Retail Garden Center Survey here: https://virginiainvasives.org/

🤔 Which plants are invasive? Here’s the Virginia Department of Conservation and Natural Resources Virginia Invasive Plant Species List:https://www.dcr.virginia.gov/natural-heritage/document/nh-invasive-plant-list-2024.pdf

⭐️ Partner Spotlight: Rivanna Conservation Alliance — Giving voice to the Rivanna River👏🏻 The Rivanna Conservation Allia...
22/05/2026

⭐️ Partner Spotlight: Rivanna Conservation Alliance — Giving voice to the Rivanna River

👏🏻 The Rivanna Conservation Alliance (RCA) serves as the local “voice of the river,” connecting communities within the Rivanna River watershed to our streams and rivers through water quality monitoring, restoration, education, and stewardship.

🌿 Invasive plants threaten the health of the Rivanna River and its tributaries by taking over riparian corridors, degrading wildlife habitat both in the water and on land, impairing water quality, decreasing the resilience of floodplains, and preventing the community from enjoying and connecting with these natural spaces. By removing invasive plants and restoring native vegetation, we can stabilize stream banks, improve terrestrial and aquatic habitat, and reduce nutrient and sediment loads into the Rivanna River.

Blue Ridge PRISM is a key partner in the RCA-led Rivanna Forest Restoration Partnership, a collaborative, community-based effort focused on the long-term management of at-risk native riparian forests along the urban corridor of the Rivanna River.

“PRISM has played a critical role in our growing community partnership, lending expertise, training volunteers, and supporting outreach and engagement efforts with private landowners,” said Lisa Wittenborn, RCA Executive Director. “With their help, we’ve started making a real difference in our riverfront forests and we look forward to continuing our work together in the coming years.”

Learn more about RCA and their programs and events here: https://www.rivannariver.org/

Photos courtesy of RCA:
• A volunteer monitor prepares to collect a benthic macroinvertebrate sample
• A volunteer frees a tree of invasive vines in Darden Towe Park
• Neighbors in Riverbluff gather for a joint Blue Ridge PRISM and RCA invasive education event
• A volunteer monitor collects data on benthic macroinvertebrates living in a stream

Virginia Invasive Plant Coalition

🌿 Shopping at your local garden center this weekend? Let us know if you see invasive plants!🌸 For the 2nd year, we’re co...
21/05/2026

🌿 Shopping at your local garden center this weekend? Let us know if you see invasive plants!

🌸 For the 2nd year, we’re conducting a statewide survey of invasive plants for sale at local nurseries. When you visit a retail garden center, fill out the survey form linked below. It works on your smartphone and you can upload photos too!

👉🏼 Submit a survey: https://airtable.com/appPQRyWLC8vLR9U6/pag5YjTU9Op7zlR0h/form

🔎 See the results of the 2025 Annual Virginia Retail Garden Center Survey here: https://virginiainvasives.org/

🤔 Which plants are invasive? Here’s the Virginia Department of Conservation and Natural Resources Virginia Invasive Plant Species List:https://www.dcr.virginia.gov/natural-heritage/document/nh-invasive-plant-list-2024.pdf

🐻 Virginia Black Bear Festival🗓️ June 6 @ 10:00 AM – 4:00 PM🙌🏼 Celebrate National Black Bear Day in Greene County, Shena...
21/05/2026

🐻 Virginia Black Bear Festival

🗓️ June 6 @ 10:00 AM – 4:00 PM

🙌🏼 Celebrate National Black Bear Day in Greene County, Shenandoah National Park, and the Appalachian Trail at this community event in downtown Stanardsville.

⛰️ 🎉🎈Enjoy live entertainment, fun interactive, activities, educational presentations, food trucks, and more! Visit with Blue Ridge PRISM to get answers to your questions about invasive plants and how to prevent their spread in the great outdoors.

👉🏼 Learn more here: https://www.vablackbearfestival.com

W**D-IT-WEDNESDAY! Two-horned trapa🌱 Two-horned trapa is a highly invasive annual aquatic plant found in ponds, lakes, a...
20/05/2026

W**D-IT-WEDNESDAY! Two-horned trapa

🌱 Two-horned trapa is a highly invasive annual aquatic plant found in ponds, lakes, and other slow-moving freshwater. The floating rosettes create dense mats that crowd out native aquatic plants and reduce oxygen exchange, completely changing the pond or lake's ecology. They also interfere with recreation and waterway access. In late May, leaves begin emerging on the water surface, making this a critical time to look for it.

Learn more at our "6 Five-Alarm-Fire Plants" Webinar. Register here: https://us02web.zoom.us/webinar/register/WN_yqaIVOY4T9WrNBHThs2Oyw #/registration

🔎 Identification:
• Distinctive floating leaves form serrated rosettes on the water surface.
• Leaves are green with reddish undersides.
• Light-pink flowers emerge in June from the rosette center.
• Seed pods have two sharp, barbed horns that can attach to waterfowl, boats, and equipment.
• Roots anchor in mud up to 12 feet deep, with stems and leaf stalks helping the plant float.

🪏 Control:
•Rake plants out of the water instead of pulling to reduce injury from the barbs. Wear heavy gloves and boots.
• Leave plants in the sun to dry out, then burn them or compost in a dry area away from water.
• Remove all plants before they go to seed in late June or early July to reduce the population.
• Do not move boats or equipment from infested water without cleaning them.
• Monitor ponds and lakes yearly for plants emerging from seed. Continued control efforts over several years will likely be necessary.

👉🏼 Further information:
Fact sheet:https://www.dcr.virginia.gov/natural-heritage/document/fstrbi.pdf
National Park Service article: https://www.nps.gov/articles/000/two-horned-trapa-trapa-bispinosa.htm

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Opening Hours

Monday 09:00 - 17:00
Tuesday 09:00 - 17:00
Wednesday 09:00 - 17:00
Thursday 09:00 - 17:00
Friday 09:00 - 17:00

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