Also called:
Part of
juniper genus Juniperus
in
cypress / juniper / redwood family Cupressaceae
in
🌲︎ conifer order Pinales.
Native to 🇺🇸 USA East, Midwest, and Great Plains, and 🇨🇦 Canada in southern Ontario.
🗺 Map by county (🇺🇸 USA-48),
🗺 map (scroll down, in red),
🗺 map (North America, Central America), 
🗺 today + with climate change (eastern 🇺🇸 USA).
Invasive > Hawai'i
Uses by native peoples
(Ethnobotany database)
Juniperus hosts caterpillars of 41 species
of butterflies and moths, in some areas.
Lots of food for 🐦︎ birds.
Use as small tree is a small yard (Pennsylvania). (page 54)
Planting info (SW Michigan).
Junipers are the ❄ winter host for 🍄︎⚕︎ fungal disease
trellis rust (TR) Gymnosporangium sabinae.
Which then transfers to nearby
🍐︎ pear genus Pyrus
as the ⚘ summer host. Then back again!
So in areas that may have this disease, do not plant these two hosts within 300 m (1000 ft) of each other! (In most towns, 3 blocks, maybe.)
Male trees score most allergenic (10 out of 10) on the OPALS™ Ogren Plant Allergy Scale. Female trees score least-allergenic (1 out of 10).
Poem to eastern red cedar from our local Conservation District forester.