Lobelias are everywhere, people use them in borders or hanging baskets they grow in a dense ball of flowers. The most popular is blue and dark purple, but it also comes in other shades. They are easy to grow and love the sun. Lobelia erinus or as commonly known Lobelia is part of the Campanulaceae family of plants. It is native to South Africa. It is a trailing perennial (usually treated as an annual) that gets covered with flowers for a rather long period of time. It has deep green colored leaves but the flowers dominate. It was named after Flemish botanist Matthias de Lobel (1536-1616).
Plant Lobelia erinus in a cool spot in moist soil but well-drained, preferably in partial shade or sun. You can cut them back in summer to encourage more flowers. Lobelia erinus grows to about 20cm or 8in height. They flower from late spring to autumn. Propagate Lobelia erinus by seed. They are generally pest-free and disease-free.