Edo Japanese iris; Iris ensata
A cultivated variety of Japanese iris, specifically associated with Edo (old Tokyo).
Edo Japanese irises bloom beautifully during the rainy season.
花菖蒲 is the general term for Japanese iris (Iris ensata), while 江戸花菖蒲 specifies the Edo variety.
Compound of 江戸 (Edo, old Tokyo) + 花菖蒲 (Japanese iris). The name reflects its historical cultivation in the Edo region.