reynutriya bohemian reynoutria japonica houtt. reynoutria sachalinensis

angiosperm aroma autumn beautiful bloom blooming blooms blossom blossoming botanical botany decoration exotic fallopia family flora floral flower flowering foliage forage garden green horticultural invasive knotweed large leaf leaves macro natural nature nectar park perennial plant polygonaceae polygonum reynoutria reynutria sachalinensis sakhalin september summer summertime texture white yellow