Striking golden-yellow foliage and blue flowers. sea holly 'Neptune's Gold'. Imagine this in an eryngium, "the spiky bracts are silvery blue at the base, turning gold at the tips. Eryngium × zabelii 'Neptune's Gold'PBR. An upright, herbaceous perennial to about 50cm. ERYNGIUM x zabelii 'Neptune's Gold'. Golden leaves contrast nicely with steel blue stems and deep periwinkle blue flowers. Step into the roles of history's most fierce warriors and embark on a new journey where bravery and good fortune will greatly determine whether you come out. . A new and totally unique introduction of Sea Holly - the foliage of this Eryngium is a brilliant golden colour, it will become lime green if slightly shady. These tough tap rooted perennials make excellent border plants and can thrive in hot sunny spots in well-drained soil although they perform best with some good. About this cultivar: · Position: Full sun, partial shade · Soil: Almost any soil, grows well in Ballyrobert · Flowers: July, August, September, October · Other. The bracts show colors from gold to silver to lavender to blue. Commonly known as Eryngo, Variable-leaved sea holly. Flower color: Mid-light blue standards; mid dark blue falls, slightly greyed by yellow underlay, lighter blue rim, distinct round gold signal with blue veins. The stems of 'Neptune's Gold' are blue, and the foliage. A stunning. The foliage and flower bracts are spiny.