Yellow Giant Hyssop (flower spikes) in Howard Co., Maryland (8/29/1981). Photo by Robert Solem. (MBP list)
Yellow Giant Hyssop blooming in Washington Co., Maryland (9/15/2013). Photo by Jim Stasz. (MBP list)
The flowers of Yellow Giant Hyssop in Washington Co., Maryland (9/15/2013). Photo by Jim Stasz. (MBP list)
Yellow Giant Hyssop, wintering stalk (in foreground) in Montgomery Co., Maryland (4/2/2016). Note the highly branched pattern of this tall mint, with its cylindrical spikes of flowers, which stand out starkly in winter. Photo by Jane Hill. (MBP list)
Yellow Giant Hyssop in Dorchester Co., Maryland (9/11/2014). Photo by Jim Stasz. (MBP list)
Yellow Giant Hyssop in Anne Arundel Co., Maryland (9/18/2019). Photo by Tyler Bell. (MBP list)
Yellow Giant Hyssop in Allegany Co., Maryland (9/11/2017). Photo by Kimberly Booth. (MBP list)
Yellow Giant Hyssop in Dorchester Co., Maryland (8/31/2016). Photo by Bill Hubick. (MBP list)
Yellow Giant Hyssop in Dorchester Co., Maryland (1/8/2017). Same plant as above on a snowy winter day several months later. Photo by Bill Hubick. (MBP list)
Yellow Giant Hyssop in Washington Co., Maryland (5/6/2018). Photo by Wayne Longbottom. (MBP list)
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