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Cornell Cooperative Extension Sullivan County Cornell Cooperative Extension Sullivan County is your trusted resource of choice for farmers, families, food businesses, and 4-H kids.

Si vive en el condado de Sullivan, sin duda ha visto esta planta perenne altamente invasiva, originaria del este de Asia...
10/15/2026

Si vive en el condado de Sullivan, sin duda ha visto esta planta perenne altamente invasiva, originaria del este de Asia. Con una altura de hasta 11 pies, la centinodia puede extenderse horizontalmente a través de una extensa red de rizomas subterráneos, a lo largo de los cuales brotan numerosos brotes. Superficialmente similar al bambú, su tallo articulado y hueco presenta numerosos n**os rojos o morados donde se unen las hojas. Por lo demás, los tallos son lisos, de color verde brillante y a men**o cubiertos de manchas o vetas más oscuras. Las partes del tallo con hojas parecen zigzaguear de n**o en n**o, formando densos matorrales.

Muchas hojas alternadas, en forma de espada o corazón, emergen de los n**os a lo largo del tallo, aunque las hojas inferiores suelen desprenderse a medida que la planta crece. A finales del verano, florecen flores de color crema con forma de dedo. A principios de la primavera, los brotes jóvenes son especialmente rojos o morados y presentan numerosas hojas enrolladas con un marcado carácter triangular.

La poligonácea tolera diversos tipos de suelo y condiciones de sol, lo que permite que esta planta perenne invasora se apodere fácilmente de las riberas de ríos, los bordes de bosques y los espacios al borde de las carreteras, convirtiendo las zonas de monocultivos en zonas desfavorecidas, ahogando y dominando a las especies nativas.

La poligonácea se puede controlar (con mucho esfuerzo) extrayendo los rizomas, eliminando todo el material vegetal, aplicando herbicida o combinando todos estos métodos.

Para más información, visite los sitios web a continuación.

https://www.catskillinvasives.com/knotweed

blogs.cornell.edu/weedid/japanese-knotweed/

Esta subvención cuenta con el apoyo del Fondo de Protección Ambiental del Estado y es administrada por el Programa de Especies Invasoras y Salud de los Ecosistemas del Departamento de Conservación Ambiental.

If you live in Sullivan County, there is no doubt you have seen this highly invasive perennial, originally from Eastern ...
10/15/2026

If you live in Sullivan County, there is no doubt you have seen this highly invasive perennial, originally from Eastern Asia. Growing up to 11 feet tall, knotweed can spread horizontally via an extensive network of underground rhizomes, along which many shoots will sprout. Superficially resembling bamboo, its jointed, hollow stem has many red or purple nodes where the leaves are attached. The stems are otherwise smooth, bright green, and often covered with darker spots or streaks. Portions of the stem bearing leaves appear to zigzag from node to node and form dense thickets.

Many alternately arranged, spade- or heart-shaped leaves emerge from nodes along the stem, though lower leaves are often shed as the plant grows. In late summer, cream colored finger like flowers bloom. In early spring, the young growth is especially bright red or purple and tipped with many furled leaves that are distinctly triangular.

Knotweed can tolerate a variety of soil types, and sun conditions, making this invasive perennial easily able to take over and turn riverbanks, forest edges and roadside spaces into monocultures, choking out and dominating native species.

Knotweed can be controlled (with much effort), by digging out rhizomes, removing all plant material, applying herbicide and/or with a combination of all methods.

For more information visit the sites below!

https://www.catskillinvasives.com/knotweed

blogs.cornell.edu/weedid/japanese-knotweed/

This grant is supported by the State’s Environmental Protection Fund and administered by Department of Environmental Conservation’s Invasive Species and Ecosystem Health Program.

Worried about your utility bills? Check out an upcoming webinar taking place on October 20th, 6:30pm to 8:00pm to presen...
10/15/2026

Worried about your utility bills? Check out an upcoming webinar taking place on October 20th, 6:30pm to 8:00pm to present on utility rights and energy efficiency!

A no-cost home energy assessment is basically a health checkup for your house or apartment. Certified professionals insp...
10/14/2026

A no-cost home energy assessment is basically a health checkup for your house or apartment. Certified professionals inspect your living space to find exactly where warm air escapes, where cold drafts sneak in, and how your heating system is performing.

Whether you own your home or rent, understanding your energy use is the fastest way to stay warmer and lower utility bills this winter.

Contact [email protected] or (845) 605-0580 to connect with your local Community Energy Advisor today!

10/09/2026
National 4-H Week is a time to celebrate!
10/07/2026

National 4-H Week is a time to celebrate!

10/06/2026

🌱 Ready to turn your farm dreams into reality?

Applications are now open for the Beginner Farmer Mentorship Cohort! Get matched with an experienced farmer mentor and benefit from hands-on, in-person learning alongside Cornell Cooperative Extension staff and fellow beginning farmers. Plus, participants receive a $10,000 stipend distributed over 12 months.

Whether you're just getting started or ready to take the next step on your farming journey, this program is designed to help you build skills, confidence, and connections.

Apply today and start growing your future! 🌿

📝Learn more and apply at: www.sullivancce.org/mentorship

For questions, contact Jamila McKinnon at (845) 292-6180 ext. 101 or [email protected].

10/06/2026

Fall is here, which means it's time to plant bulbs for spring 2027!

We’ll be focusing on garlic and flowering bulbs that bloom throughout the year from March to September. Plan to get your hands dirty for this interactive experience and hear about the elements of garden design.

📆October 28th, 2026
⏰5:00pm-6:00pm
📍64 Ferndale-Loomis Rd., Liberty, NY
📝Register at: www.sullivancce.org/BulbPlanting

Questions? Contact Katie Gasior at 844-292-6180 ext. 123 or email [email protected]

Address

64 Ferndale-Loomis Road
Liberty, NY
12754

Opening Hours

Monday 8:30am - 4:30pm
Tuesday 8:30am - 4:30pm
Wednesday 8:30am - 4:30pm
Thursday 8:30am - 4:30pm
Friday 8:30am - 4:30pm

Telephone

+18452926180

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