 | Oregon Grape Holly. Showy ornamental native! Looking for an easy-care understory plant to meander throughout your landscape? Then try the outstanding, carefree native Oregon Grape Holly (Mahonia aquifolium, or more recently referred to as Berberis aquifolium) to bring edible ornamental charm to your landscape, along with a lot of local birds and butterflies! Highly ornamental, canary-yellow flower clusters cover Oregon Grape Holly in spring. These massive clusters of vivid yellow spring flowers develop into picturesque... - Oregon Grape Holly. |