Flower heads in a flat-topped, branched cluster. Petals are very short with a white center disk.
Environments: Sun
Wild Sweetpotato
White funnel-shaped flower with a pink to purple center. Clusters of 1-7 flowers on the stem. Flowers close quickly in direct sun.
Winged Sumac
Large cluster of greenish-white flowers. The center leaf stalk has wings between the leaflets.
Winter Honeysuckle
A shrub with pairs of fragrant, white, two-lipped flowers that bloom before the leaves emerge. The upper lip has one lobe, the lower lip has three lobes. The heart-shaped fruit is orange to dark red.
Wisteria
A climbing vine with 6-12 inch clusters of fragrant, purple, pea-shaped flowers.
Wood Sorrel
Bright yellow flowers in branching clusters of 3-15.
Yellow Star-grass
Clusters of 1-3 star-shaped yellow flowers. The leaves look like blades of grass.
Yellow Thistle
A spiny plant with large yellow or purple flower heads.