Cariboo™ Blue Campanula

Cariboo™ Blue is a compact interspecific bellflower bred for an early, abundant display of blue flowers on upright, mounding plants. Syngenta lists a 14–18-inch garden height, 8–12-inch spread, and mid-spring through summer flowering, making it useful in containers, border fronts, and small garden groupings. ## Flowers and placement The [Syngenta Flowers profile](https://www.syngentaflowers.com/ams/product/flower/70065365) identifies the blue Cariboo selection by product number 70065365. The breeder describes strong early flowering, color through summer, an upright habit, and suitability for several container sizes. It gives full-sun exposure, dimensions of 14–18 inches high by 8–12 inches wide, and hardiness zones 5a–9a. The exact cultivar dimensions are suitable for compact borders and patio pots. ## Growing conditions Syngenta lists this selection for full sun. For general Campanula care, the [RHS growing guide](https://www.rhs.org.uk/plants/campanula/specialist/growing-guide) recommends moist but not soggy soil through the growing season, with extra attention during dry spring and summer weather. In hot weather, avoid letting container-grown plants dry completely. The breeder reports that Cariboo flowers from mid-spring through summer and is pollinator friendly. Its compact form can be repeated along a path or grouped with other low perennials for a concentrated color display. ## Maintenance Water regularly while plants establish and during prolonged dry spells. Remove faded flower stems to keep the planting tidy and support continued display. In containers, check moisture more often than in garden beds and ensure excess water can drain freely.