Appearance
"Solidago altissima" is one to two meters tall, with fine hairs on the stem. The leaves are located along the stem, not in a rosette near the ground. One plant can produce as many as 1500 small yellow flower heads in a large conical array."Solidago altissima" is self-incompatible, meaning that the pollen from one plant cannot pollinate the female flower parts of the same plant.
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