Laguna® Dark Blue Lobelia

Laguna® Dark Blue is a mounded, self-cleaning annual lobelia with true blue flowers that attract birds and butterflies. Proven Winners lists it for spring through summer in part sun to sun, with better heat tolerance than older lobelias. ## Plant Profile The [Laguna® Dark Blue plant page](https://www.provenwinners.com/plants/lobelia/laguna-dark-blue-lobelia-erinus) binds this selection to variety code USLOB0901 and patent USPP 21,791. It grows 6–12 inches tall, spreads 12–24 inches, and may trail up to 24 inches. The compact, rounded habit fits containers and landscape beds, including hanging baskets where its trailing stems can spill over the rim. ## Growing Conditions The source lists USDA hardiness zones 9a–11b and a part-sun-to-sun exposure. Use moist, well-drained soil, but avoid keeping the roots wet. In cooler regions, this tender plant is usually grown as an annual; it performs best with regular moisture and protection from intense afternoon heat. ## Maintenance This variety is self-cleaning and does not require deadheading. Water when the soil surface begins to dry, and make sure pots and baskets drain freely. Trim back tired stems if the planting becomes untidy, then continue watering to support fresh growth.