Lobelia Heatopia™ Dark Blue

Heatopia™ Dark Blue is the Lobelia cultivar ‘Balheatarlu,’ a compact, medium-mounded selection with dark-blue flowers. Ball FloraPlant lists a mature size of 6–8 inches tall by 6–10 inches wide, partial sun to sun, and excellent heat tolerance on its [official plant page](https://www.ballfloraplant.com/Products/Details/?phid=039310074000648). ## Appearance and Use Its rounded habit suits borders and mixed containers, while the compact size also works in window boxes and baskets. Ball describes one plant as filling a quart or gallon pot in production and notes that the cultivar can be grown under cool or hot conditions. ## Growing Conditions Choose a site in partial sun or sun. The developer highlights heat tolerance, but does not characterize this cultivar as drought tolerant; water according to local soil and weather conditions. North Carolina State Extension notes that Lobelia erinus generally prefers organically rich, moist, well-drained soil and regular watering when grown in gardens ([species care guide](https://plants.ces.ncsu.edu/plants/lobelia-erinus/)). ## Maintenance Keep the root zone from drying out, especially in containers, and make sure excess water can drain. Remove spent or damaged growth as needed to keep the planting tidy.