Lobelia erinus Laguna® Ultraviolet Lobelia

Laguna® Ultraviolet™ is a mounded, heat-tolerant annual lobelia with rich violet-purple flowers and a long spring-to-summer display. Its compact height and spreading stems suit container edges, window boxes, hanging baskets, and border planting. ## Selection and Performance Proven Winners identifies Laguna Ultraviolet as Lobelia erinus selection LOBZ0009. Its exact [plant profile](https://www.provenwinners.com/plants/lobelia/laguna-ultraviolet-lobelia-erinus) lists 6–12 inches of garden height, a 12–24-inch spread, spring and summer flowering, and hardiness in zones 9b–11b. The [plant patent record](https://patents.justia.com/patent/PP27448) names LOBZ0009 as Lobelia erinus and records the grant date as December 6, 2016. ## Growing Conditions Give it full sun or partial shade in well-drained soil. Water as needed, then let the soil surface dry before watering again; this selection does not like wet roots. It handles heat better than older lobelias, though extended nights in the upper 70s °F may interrupt flowering. Its spreading stems work well at container edges and along borders. ## Maintenance The flowers are self-cleaning, so routine deadheading is unnecessary. If flowering pauses during sustained hot nights, lightly trim the plant to encourage branching when temperatures ease. Fertilize container plantings regularly; in garden beds, a yearly application of compost or fertilizer supports continued growth. The [North Carolina Extension profile](https://plants.ces.ncsu.edu/plants/lobelia-erinus/) provides species-level guidance on moisture, light, and warm-weather care.