Lobelia does not strictly require full sun—and assuming it does is one of the most common reasons gardeners lose vigor, bloom, or even entire plants midsummer. In fact, most popular lobelia varieties perform best with 6–8 hours of direct sunlight…
Blue lobelia ( Lobelia siphilitica and Lobelia cardinalis, though true “blue lobelia” refers primarily to L. siphilitica) is a hardy, native North American perennial that thrives in consistently moist, rich soil and partial to full sun— not dry, sandy, or…
Annual lobelia ( Lobelia erinus) is a compact, prolific flowering plant prized for its delicate, snapdragon-like blossoms in shades of blue, violet, white, rose, and deep purple—often with contrasting white or yellow throats. It thrives in cool-to-moderate temperatures (60–75°F), prefers…