Hymenocallis speciosaHymenocallis speciosa at a glance: Hymenocallis speciosa is a Caribbean spiderlily grown from a bulb and valued for umbels of narrow white flowers with a slight green tinge and a soft vanilla like fragrance. Each flowering stalk can carry many blooms, opening in sequence so the display lasts longer than a single flower would suggest. Warmth, brighter light, and evenly moist but free draining soil during active growth help it perform best, while