Otacanthus caeruleus, commonly known as the Blue Brazilian Snapdragon or Brazilian Bluebell, is a flowering plant native to Brazil. It belongs to the family Plantaginaceae. Here's some information about this plant:

1. Appearance: Otacanthus caeruleus is a herbaceous perennial plant that typically grows up to 1 to 2 feet (30 to 60 centimeters) in height. It has attractive, bright blue flowers that resemble snapdragons. The flowers are tubular in shape and have two lips, with the upper lip forming a hood and the lower lip having three lobes. The plant has green, lance-shaped leaves that are arranged opposite each other along the stems.

2. Flowering season: The Blue Brazilian Snapdragon blooms profusely during the warm months of spring and summer, producing clusters of flowers that can add a splash of vibrant blue color to the garden or landscape.

3. Growing requirements: This plant is relatively easy to grow and care for. It prefers a sunny or partially shaded location and well-draining soil. It can tolerate a range of soil types but performs best in fertile, loamy soil. Adequate moisture is important, so regular watering is necessary, especially during dry spells. It is not frost-tolerant and is suitable for cultivation in USDA hardiness zones 9 to 11.

4. Landscape use: Otacanthus caeruleus is often grown as an ornamental plant in gardens, borders, and containers. Its eye-catching blue flowers make it a popular choice for adding color to outdoor spaces. It can also attract pollinators like bees and butterflies.

5. Propagation: The Blue Brazilian Snapdragon can be propagated through seeds or stem cuttings. Seeds can be sown in pots or trays and kept in a warm and moist environment until germination. Stem cuttings can be taken from healthy plants, treated with rooting hormone, and planted in a well-draining rooting medium. Provide warmth and humidity to encourage root development.

6. Maintenance: Regular deadheading of spent flowers can help prolong the blooming period and promote further flower production. Pruning can be done after the flowering season to maintain a compact and tidy plant shape.