echinodorus cordifolius flower plant on farm

summer nature aquatic plant bloom tree garden season yellow white flower perennial beautiful pot decorative water duck pond blossom wildflower green sword spring beauty fresh blooming ornamental botany flora floral stem vibrant leaf cash crops absorbing toxins clean oxygen air purifier natural echinodorus palifolius benzene formaldehyde mexican emerged alismataceae cordifolius plants creeping burhead