Silphium terebinthinaceum Bain Relief Rubus now measures 8' tall x

now measures 8' tall x 10' wide

surviving both 15 degrees F and 106 degrees F in the ground at Plant Delights

I next saw the stable form four years later in Roy Herold's Massachusetts garden

and the ornamental potential of the plant is diminished when the old foliage isn't removed

grey-green leaves outright

Silphium terebinthinaceum Bain Relief Rubus now measures 8' tall xSilphium 'Bain Relief' is a 2026 Plant Delights JLBG introduction of a 2013 Zac Hill collection from Bain's Gap in Calhoun County, Alabama. With a native range from northern Wisconsin to central Alabama, this collection of prairie rosinweed is from the far southern end of its natural range. These genetics produce a bold textured plant that's 3' tall x 6' wide, composed of sandpaper textured green leaves that measure 15" long x 8" wide. The clumps are