ERYNGIUM x zabelii 'Neptune's Gold'. About this cultivar: · Position: Full sun, partial shade · Soil: Almost any soil, grows well in Ballyrobert · Flowers: July, August, September, October · Other. An upright, herbaceous perennial to about 50cm. . A stunning. Striking golden-yellow foliage and blue flowers. sea holly 'Neptune's Gold'. 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. The foliage and flower bracts are spiny. The stems of 'Neptune's Gold' are blue, and the foliage. 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. Imagine this in an eryngium, "the spiky bracts are silvery blue at the base, turning gold at the tips. Golden leaves contrast nicely with steel blue stems and deep periwinkle blue flowers. 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. Commonly known as Eryngo, Variable-leaved sea holly. The bracts show colors from gold to silver to lavender to blue. Eryngium × zabelii 'Neptune's Gold'PBR. 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.