Blue Donna Delphinium

Blue Donna is an upright belladonna-type delphinium grown for tall blue flower spikes in late spring and summer. Its cut-flower stems and heat-tolerant performance make it useful in sunny perennial borders and dedicated cutting gardens. ### Flowering and placement The [Ball Seed product profile](https://info.ballseed.com/PlantInfo/?phid=022100001024043) identifies Blue Donna as Delphinium × belladonna and gives a mature height of 32–40 inches with an 8–10 inch spread. It lists blue flowers, an upright habit, heat tolerance, and late-spring through summer flowering. The current height range is shown in feet because it crosses the 36-inch unit threshold; the width remains in inches. ### Growing conditions Choose a sunny site with fertile, well-drained soil and regular moisture during active growth. Space plants to allow air movement around the flowering stems. The tall spikes provide vertical structure in a border and are useful for cutting; support may help in exposed gardens or where stems carry heavy flower heads. ## Maintenance Water consistently during dry spells and remove spent flower stems after the main display. Cut back old growth when flowering has finished to keep the planting neat.