Echium pininana, commonly known as the Tower of Jewels or Giant Viper's Bugloss, is a striking biennial plant native to the Canary Islands. 

Height/Spread: In ideal conditions, Echium pininana can grow to an impressive height of 10 to 15 feet (3 to 4.5 meters) with a spread of about 3 to 5 feet (1 to 1.5 meters). However, in the Irish climate, it typically reaches heights of around 6 to 10 feet (1.8 to 3 meters) and maintains a spread of 2 to 4 feet (0.6 to 1.2 meters).

Position: Echium pininana thrives in full sun or partial shade. In the Irish climate, it benefits from being planted in a sheltered position, as it can be sensitive to strong winds.

Soil: This plant prefers well-draining soils with good fertility. In the Irish climate, it is recommended to grow Echium pininana in fertile, loamy soil that retains some moisture but doesn't become waterlogged.

Flowering Season: Echium pininana typically flowers in its second year of growth, usually from late spring to early summer. It produces tall spikes adorned with clusters of delicate, bell-shaped flowers that range in color from shades of pink to purple-blue. In the Irish climate, the flowering season may extend from late spring to early/mid-summer, depending on weather conditions.

Uses: Echium pininana is primarily cultivated for its striking appearance and impressive flowering spikes. It makes a dramatic focal point in gardens, borders, or large containers. Additionally, the flowers of Echium pininana are attractive to pollinators, such as bees and butterflies, making it a beneficial plant for supporting local biodiversity.

Please note that while Echium pininana can generally thrive in the Irish climate, local growing conditions and variations in weather may influence its overall growth and flowering patterns.