Resources on Invasive Plants

invasives in your yard

It’s time to remove these invasives from your yard!

Invasive Plants of Sligo Creek by Type

Shrubs

Click on the common name for a photo. The “More Info” links are being updated. Please check back in December.

Common Name Scientific Name Notes
Japanese Barberry Berberis thunbergii More Info
Bamboo Phyllostachys aureosulcata £ ♠ Several varieties. Yellow groove Phyllostachys aureosulcata is the most common. More Info
Bush Honeysuckle (Amur) Lonicera maackii More Info
Japanese Holly Ilex crenata £ More Info
Japanese Knotweed Polygonum cuspidatum Changed to Fallopia japonica, a name not yet widely used. More Info
Multiflora Rose Rosa multiflora More Info
Privet Ligustrum spp. £ ♠ Other privet species also; none are native. More Info
Autumn Olive Elaeagnus umbellata £ More Info
Rose of Sharon Hibiscus syriacus More Info
Wineberry Rubus phoenicolasius A native raspberry, unsimilar in appearance, occurs in Sligo. More Info

£ The plant is found in only a few areas, though it might be numerous there.
♠ Indicates the plant was listed by Dorothy Salisbury as present in Sligo in 1970, although she noted most as rare or infrequent. See the Salisbury List.

Vines

Click on the common name for a photo. The “More Info” links are being updated. Please check back in December.

Common Name Scientific Name Notes
Asian bittersweet Celastrus orbiculatus No native bittersweet is known to exist. More Info
Asian Clematis Clematis paniculata Native clematis also exists; see the Native Plant InventoryMore Info
English Ivy Hedera helix ♠ On ground and also in trees. More Info
Japanese honeysuckle Lonicera japonica ♠ A native honeysuckle also exists; see the Native Plant InventoryMore Info
Kudzu Pueraria lobata ♠ in about six sites. More Info
Mile-a-Minute Polygonum perfoliatum More Info
Porcelainberry Ampelopsis brevipedunculata Sligo has three species of similar-looking native Grape. More Info
Wintercreeper Creeping Euonymus Euonymus fortunei ♠ More Info
Wisteria Wisteria sinensis More Info
Akebia Akebia quinata More Info
Japanese Hop Humulus japonicus Found with mile-a-minute, west side of soccer field on north side of Dennis. Escape from cultivation. More Info

♠ Indicates the plant was listed by Dorothy Salisbury as present in Sligo in 1970, although she noted most as rare or infrequent. See the Salisbury List.

Native vines include Poison Ivy, Grape, Greenbrier, and Virginia Creeper. We are saving these plants so as not to interfere with natural plant relationships. Please do not cut any vine unless you are a certified Weed Warrior and have approval to remove them!

Herbs and Ground Covers

Click on the common name for a photo. The “More Info” links are being updated. Please check back in December.

Common Name Scientific Name Notes
Bull thistle Cirsium vulgare More Info
Canada thistle Cirsium arvense More Info
Beefsteak Plant Perilla frutescens £ ♠ More Info
Garlic mustard Alliaria petiolata ♠ More Info
Lesser celandine Ranunculus ficaria More Info
Mugwort Artemisia vulgaris ♠ More Info
Periwinkle Vinca minor ♠ More Info
Stilt grass Microstegium vimineum More Info
Bishop’s Weed Goutweed Aegopodium podagraria More Info
Gill-over-the-ground Glechoma hederacea ♠ ♣ More Info
Indian Strawberry Duchesnea indica ♠ ♣ More Info
Yellow Archangel or Golden Dead Nettle Lamium galeobdolon More Info Known only in section 6

Garden Bulbs – In some places crocus, snowdrops,and Star-of-Bethlehem are appearing frequently in grass and in the woods. Liriope and day lilies are also present occasionally, but not enough to be considered invasive.

£ The plant is found in only a few areas, though it might be numerous there.
♠ Indicates the plant was listed by Dorothy Salisbury as present in Sligo in 1970, although she noted most as rare or infrequent. See the Salisbury List.
♣ Spreading from sun to lightly shaded woods. We are not attempting to rid the park of it.

Aquatic Plants

Click on the common name for a photo. The “More Info” links are being updated. Please check back in September.

Common Name Scientific Name Notes
Water Hyacinth Eichhornia crassipes More Info
Water Lettuce Pistia stratioites ♣ More Info
Water Primrose Jussiaea sp. £ More Info

* About 200 plants found and removed by resident Dominic Quattrocchi from the upper pond at Forest Glen, July 2006.
♣ About 10 plants found and removed by resident Dominic Quattrocchi from the upper pond at Forest Glen, July 2006.
£ Discovered in 2005 in six stormwater ponds. Permanent removal not attempted.

Trees

Click on the common name for a photo. The “More Info” links are being updated. Please check back in September.

Common Name Scientific Name Notes
Tree of Heaven Ailanthus altissima   ♠ Please report this tree to the RIP Coordinator. More Info
Flowering Cherry Prunus avium   Section 6. Several hybrids present. More Info
Mimosa Albizia julibrissin ♠ More Info
Norway Maple Acer plantanoides ♠ More Info
Princess Tree Paulownia tomentosa ♠ £ More Info
White Mulberry Morus alba ♠ Sligo has a native Red Mulberry, with much larger leaves. More Info
Yellow Buckeye Aesculus flava More Info
Siberian Elm Ulmus pumila More Info

£ The plant is found in only a few areas, though it might be numerous there.
♠ Indicates the plant was listed by Dorothy Salisbury as present in Sligo in 1970, although she noted most as rare or infrequent. See the Salisbury List.

Scientific names based mainly on websites and Brown and Brown’s Woody Plants of Maryland, 1972. Compiled by Sally Gagne, April 2004; updated July 2005.