Flowering Sea Kale (Crambe cordifolia)

1 plant in a 9cm pot, sent in plastic-free packaging. A colossal, architectural perennial, prized for its gigantic clouds of honey-scented flowers and edible young foliage.

Perennial | 150/250cm tall | Full sun | Edible young leaves and massive floral displays | High-impact architectural form and pollinator magnet.

 Flowering Sea Kale (Crambe cordifolia) originates from the Caucasus Mountains. It produces a massive basal rosette of huge, dark green, heart-shaped leaves that can easily span over a metre wide. , The young, tender leaves are entirely edible and can be cooked just like traditional leafy kale. The roots and the developing green seed pods are also edible, but it is primarily cultivated for its staggering ornamental and ecological value rather than pure crop yield.

Crambe cordifolia is an absolute showstopper. In early to mid-summer, the plant erupts, sending up sturdy, branching stalks that top out at well over two metres tall. These stalks carry thousands of tiny, highly fragrant white flowers, creating an effect resembling a giant, frothy cloud of baby’s breath. This mass of flowers acts as a premium, highly visible beacon for local wildlife. The sweetly scented blooms provide an enormous, easily accessible nectar and pollen resource, drawing in huge numbers of foraging honeybees, bumblebees, hoverflies, and butterflies over an extended three-week blooming period.

Flowering Sea Kale is an incredibly long-lived, statuesque specimen plant. Holding a prestigious RHS Award of Garden Merit (AGM) and an H6 hardiness rating, it is fully hardy across the UK and will comfortably survive extreme winter freezing. C. cordifolia likes deep, fertile, highly free-draining soil to accommodate its massive, deeply penetrating taproot. Because of this taproot, it resents being moved once established it’s best planted in its permanent home at the back of a large border or in a corner of your veg garden where it has the physical space to expand. Once the spectacular floral display finishes, cutting the towering stems back to the base maintains a tidy framework of bold green foliage for the remainder of the summer.

Delivery Information

All plants are carefully packed and sent in plastic-free packaging to protect both the plant and the environment. Plants are dispatched promptly so they arrive fresh, healthy, and ready to plant.

We ship orders using a tracked 24-hour delivery service, helping to minimise time in transit and reduce stress on the plant. Orders are packed by hand at the nursery, and we aim to dispatch early in the week to avoid delays over weekends.

If you have any questions about delivery timing or combining orders, please get in touch before ordering and we will be happy to help.

To find out more about other plants for your garden visit – https://dyfiplants.substack.com