Saturday, October 8, 2016

Rattlesnake Fern

Botrychium virginianum
Reaches up to 2 feet in height. It is a widespread native of rich deciduous woodlands in North America ( from the Aleutian Islands to Fairbanks, Alaska to southwest Northwest Territories to Fort McMurray, Alberta to central Manitoba to near Moosonee, Ontario to Newfoundland; south to far northern California to northern Nevada to north-central Colorado to central Texas to northern Florida ). In Ontario, it occurs north to at least Grand Bend. It was very abundant in rich woods throughout the Windsor/Essex County region, the Lake Erie Islands and Ohio shore before 1900.
The fronds are up to 1 foot wide.
Hardy zones 4 to 8 ( likely 2 for Fort McMurray, Alberta seed source ) in partial to full shade on moist, well drained soil.

* photos taken on June 23 2013 @ U.S. National Arboretum, Washington, DC

* photo taken on Aug 1 2016 in Howard Co., MD

* photo taken on Aug 20 2016 in Olney, MD

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