helianthus tuberosus sunroot topinambur yellow flowering plant, beautiful jerusalem artichoke sunchoke wild sunflower petals

helianthus tuberosus yellow flower bloom petal topinambur jerusalem artichoke sunroot sunchoke wild sunflower earth apple root vegetable herbaceous perennial plant summer blooming blossom blossoming season seasonal nature natural daylight botany botanic botanical flora floral closeup view detail close growth bunch bouquet buds asteraceae color bright sunny stem group center brown autumn flowering beautiful petals flowers