Deep Buttercup

Deep Buttercup (Tell Muhlestein, 1947) is a radiant Tall Bearded iris that brings a gallery-worthy presence to the midseason garden. Introduced by Tell's Iris Gardens in 1948, this cultivar is the result of a thoughtful cross between 'Brown Betty' and 'Golden Eagle.' Its saturated, luminous yellow blooms are both vivid and rich-toned, creating a bold, color-forward impact that instantly enlivens any landscape. With its classic form and unmistakable vibrancy, Deep Buttercup stands out as a collector-grade centerpiece—perfect for those seeking a memorable, sunshine-infused highlight for their borders. Attributes: Guardian Garden, Historic Guardian Garden (GG) This cultivar is a Guardian Garden Iris. Guardian Garden irises are endangered cultivars preserved through long-term stewardship rather than routine sale. Many of these varieties have been lost to time through attrition, discontinued propagation, or the disappearance of original growers, leaving only a few known living examples in cultivation. When a Guardian Garden variety is offered, it reflects that a sustainable stock level has finally been reached within our collection; availability remains intentionally limited to protect the cultivar’s future. We encourage collectors who value historic preservation to support the continued safeguarding of rare and endangered irises by joining the Historic Iris Preservation Society.