Eryngiums – or sea hollies – include the fabulously blue cone-shaped flowers of Eryngium × oliverianum Big Blue and the more thistle-like Eryngium bourgatii Picos Blue. Both have spiky ...

Sea lavender (Limonium latifolium) is a herbaceous perennial that puts on pretty purple, blue, or pink spiky flowers that ...

Plant a cluster of spiky flowers in the mix and you will never want to be without them. It was about 30 years ago that the first varieties of Angelonia angustifolia or angel flower showed up in ...

Its flowers can be vibrant blue or pink. "It's hardy and reliable, bringing color when most other perennials haven't yet emerged," says Janney. "I love how its spiky flowers contrast with rounder ...

Angelface Wedgwood Blue angelonia has won 17 awards from Canada to Florida. ... Plant a cluster of spiky flowers in the mix and you will never want to be without them. Advertisement.