Riparian Stewardship & Invasive Guide
Wallkill River Watershed Alliance — Rivers-to-Ridge Buffer Restoration Site
LON: -74.091117
Intern Field Briefing
On Wednesday, June 17, 2026, interns will maintain the Trees for Tribs restoration zone by clearing invasive growth around shelter tubes.
Location: 41 Springtown Rd Trailhead Parking Lot
Timing: 1:00 PM start
Provided: Gloves + water
Bring: Sunblock, bug spray, phone, boots
Red dot: Trail entrance
Blue dot: Trees for Tribs site
In-Situ Reference Image
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European Stinging Nettle
Urtica dioica subsp. dioica
- Leaf Arrangement: Strictly opposite, ovate-to-lanceolate with cordate bases.
- Anatomical Markers: Equipped with hollow stinging silica hairs containing formic acid.
- Lookalike Ruled Out: Wood Nettle has alternate leaves clustered near the top of the stem.
In-Situ Reference Image
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Mugwort
Artemisia vulgaris
- Foliage Setup: Deeply pinnately lobed with smooth dark green tops and woolly backs.
- Scent: Strong aromatic aroma when crushed.
- Lookalike Ruled Out: Common Ragweed leaves are completely green on both sides and lack the sage scent.
IMG_0172 ID Reference
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Common Burdock IMG_0172 Match
Arctium minus
- Leaves: Extremely broad, wavy, cordate bases, light veins, rough top surface.
- Growth: Massive flat basal rosette in its first year, bolting with hooked seed-burs in year two.
- Lookalike Ruled Out: Skunk Cabbage leaves are completely flat-edged and release a strong sulfurous skunk odor when torn.
In-Situ Reference Image
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Curly Dock
Rumex crispus
- Leaf Margins: Wavy, crinkled, undulated edges.
- Seed Heads: Highly structured dense vertical clusters turning a deep copper-brown.
- Lookalike Ruled Out: Native Swamp Dock lower leaves are flat with entirely smooth, non-crinkled borders.
In-Situ Reference Image
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Japanese Hops
Humulus japonicus
- Structure: 5-7 deeply cut palmately lobed leaves with sharply serrated margins.
- Stem Touch: Coated in downward-pointing, scratchy anchor prickles.
- Lookalike Ruled Out: Native American Hops has primarily 3 lobes and lacks severe rasping climbing prickles.
In-Situ Reference Image
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Canada Thistle
Cirsium arvense
- Leaf Setup: Alternate, deeply crinkled lobed leaves armed with fine spines.
- Stems: Stems are ridged but completely lack continuous spiny "wings".
- Lookalike Ruled Out: Bull Thistle has continuous spiny wings extending down the stems and rough, scratchy upper leaf surfaces.