Denver Gold Columbine

Denver Gold is a vigorous, clump-forming columbine with divided green foliage and large lemon-yellow flowers on long, graceful spurs. Its upright spring display suits mixed perennial borders, cottage gardens, woodland edges, rock gardens, and cut-flower plantings. ## Size and placement The Royal Horticultural Society lists 0.5–1 m in height and 0.1–0.5 m in spread; the current catalog labels express those source ranges as 1.6–3.3 feet and 4–20 inches. Colorado State University Extension gives a broader 1–3 foot height range, while one nursery listing reports 30–36 inches tall by 16–20 inches wide. These estimates vary with growing conditions and whether foliage or flowering stems are measured. Plant in full sun or partial shade; partial shade helps reduce stress in warmer or drier sites. [RHS cultivar profile](https://www.rhs.org.uk/plants/166835/aquilegia-chrysantha-denver-gold/details) · [Colorado State University Extension](https://extension.colostate.edu/resource/herbaceous-perennials/) · [Sooner Plant Farm](https://www.soonerplantfarm.com/plant/columbine-denver-gold) ## Soil and seasonal interest Use fertile, moisture-retentive soil that drains freely. Columbines appreciate even moisture, especially in sunny locations, but poorly drained soil can cause crown problems. RHS reports summer flowers, while CSU lists May–June for *Aquilegia chrysantha*; garden timing varies with climate. The yellow flowers are most prominent in spring and may continue or recur into summer in favorable conditions. Like other columbines, this cultivar can self-seed; seedlings from hybrids may differ from the parent. [Iowa State University Extension](https://yardandgarden.extension.iastate.edu/how-to/all-about-columbine) ## Maintenance After flowering, remove faded stems to limit self-seeding or leave some seedheads if volunteer plants are welcome. Cutting the plant back after bloom can refresh its foliage; water afterward if the soil is dry.