Furnace Dock Road, Croton-on-Hudson, Westchester County, NY
30 acres


Saw Mill River Parkway North; get off at exit 25, Hawthorn (at mileage marker 20:90). Turn left at the light and head north on Route 9A (starting at 20:90) and drive 8.8 miles to merge with Route 9 north. Get off at Senasqua Road (mile marker 21:71); turn left and drive about 1.8 miles to turn left onto Furnace Dock Road (at mile marker 22:16); drive 0.4 of a mile and park along the right side of the road just across from the sign for Graff Sanctuary on the left.


Saw Mill River Audubon Society sanctuaries are open year-round from dawn until dusk for members and the general public for study and enjoyment. Guided group tours of the sanctuaries are available upon request. Trail maps are available for the six sanctuaries with trails and bird lists and nature trail booklets are available for Brinton Brook and Pruyn Sanctuaries.


Oak woods, steep gorge, view of the Hudson River.


You can make a counter-clockwise walk The white trail heads southeast downhill to a low area and then starts uphill. There is a fork in the path with a sign for the tulip trail on the left. Just keep going straight (the return path will be the left fork). The white trail goes southwest along the base of a hill and then south. There are two really large eroded gorges heading down hill.

Pick up the yellow trail (Riverview Trail) that goes along the edge of the hill from where one can see a small lake below and the coastal railroad tracks. There is a horseshoe turn that reverses the hiker's direction from south to north.

On a tree are markers indicating the Tulip Trail heads west and north and the Riverview Trail heads south. Keep going straight on the Tulip trail with its white blazes and blue blazes.

Come to another group of markers. One could go right (east) to come out on Briggs Lane (but the exit is temporarily closed). Go straight on the Jack-in-the-Pulpit Trail uphill and then downhill in a zig-zag pattern back to the first Tulip Trail Sign you saw. Head uphill back to the parking area.

Dr. Patrick Louis Cooney
dates are times the species were found in bloom

Acer platanoides (Norway maple)
Acer pseudoplatanus? (sycamore maple?) -- flowers hang down in stalks
Acer japonica (Japanese maple, cut-leaved)
Acer palmata (Japanese red maple, palmate)
Acer rubrum (red maple)
Acer saccharum (sugar maple)
Ailanthus altissima (tree-of-heaven)
Betula lenta (black birch)
Carya ovata (shagbark hickory)
Cornus florida (flowering dogwood)
Fagus grandifolia (American beech)
Liriodendron tulipifera (tulip tree)
Ostrya virginiana (American hop horn beam)
Pinus strobus (white pine)
Prunus serotina (black cherry)
Robinia pseudoacacia (black locust)
Sassafras albidum (sassafras)
Tsuga canadensis (eastern hemlock)

Berberis thunbergii (Japanese barberry)
Euonymus alatus (winged euonymus) 5/11/93 -- lots
Lindera benzoin (spicebush)
Rosa multiflora (multiflora rose)
Rubus occidentalis (black raspberry)
Rubus phoenicolasius (wineberry)
Rubus sp. (blackberry)
Viburnum acerifolium (maple-leaf viburnum)
Viburnum prunifolium blackhaw viburnum 5/11/93

Celastrus orbiculatus (Asiatic bittersweet)
Lonicera japonica (Japanese honeysuckle)
Parthenocissus quinquefolia (Virginia creeper)
Toxicodendron radicans (poison ivy)
Vitis sp. (grape)
Wisteria sp. (wisteria)


Alliaria petiolata (garlic mustard) 5/11/93
Ambrosia artemisiifolia (common ragweed)
Arisaema triphyllum (jack-in-the-pulpit) 5/11/93
Aster divaricatus (white wood aster)
Chelidonium majus (celandine) 5/11/93
Circaea lutetiana (enchanter's nightshade)
Commelina communis (Asiatic dayflower) 7/24/01
Convallaria majalis (lily-of-the-valley) 5/11/93
Duchesnea indica (Indian strawberry)
Erythronium americanum (trout lily)
Galium asprellum (rough bedstraw)
Geum canadense (white avens) 7/24/01 one in bloom
Impatiens capensis (orange jewelweed)
Lapsana communis (nipplewort) 7/24/01
Maianthemum canadense (Canada mayflower)
Oxalis sp. (yellow wood sorrel) 7/24/01
Phytolacca americana (pokeweed)
Polygonatum sp. (true Solomon's seal)
Polygonum cespitosum (cespitose smartweed) 7/24/01
Polygonum virginianum (Virginia knotweed; jumpseed)
Symplocarpus foetidus (skunk cabbage)
Viola sororia (common blue violet) 5/11/93

Juncus tenuis (path rush)

Carex pensylvanica (Pennsylvania sedge)

Panicum clandestinum (deer-tongue grass)

Ferns and Fern Allies:
Athyrium filix-femina (lady fern)
Dennstaedtia punctilobula (hay-scented fern)
Onoclea sensibilis (sensitive fern)