New York Natural Heritage Program
Wild Hydrangea
Hydrangea arborescens L.
Dicots
Hydrangea arborescens leaves Stephen M. Young
Family: Hydrangea Family (Hydrangeaceae)

State Protection: Threatened
listed species are those with: 1) 6 to fewer than 20 extant sites, or 2) 1,000 to fewer than 3,000 individuals, or 3) restricted to not less than 4 or more than 7 U.S.G.S. 7 minute topographical maps, or 4) listed as threatened by U.S. Department of Interior.

Federal Protection: Not Listed

State Rarity Rank: S2
A State Rarity Rank of S2 means: This plant is threatened/imperiled in New York because of rarity (typically 6-20 populations or few remaining individuals) or is vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: This species is demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
Wild Hydrangea is widely available in the horticulture trade, especially for shade gardens. The two most popular varieties are 'Annabelle' and 'Grandiflora'. Its roots have been used for hundreds of years in folk and Native American medicine for the treatment of various ailments, especially for the prostate gland. The common name "seven-bark" refers to the way the bark peels off in several layers of various colors.

State Ranking Justification [-]
There are ten existing populations but most of these are in ravines and on steep slopes that are not likely to be affected by development or logging. Most of the populations are rather limited in size. There are 10 historical records but eight have not been searched.

Short-term Trends [-]

Long-term Trends [-]