4. Pacific Giant Blue Bird Delphinium
The “Blue Bird’’ is a hybrid Pacific delphinium. Gardeners grow it as a biennial or annual due to the many stages of flowering during the summer season. This species is renowned among delphinium-lovers for its true-blue flower that turns white in the center.
Pacific Blue Birds are another “giant delphinium,” that soars up to heights of 5-feet, before bursting into multiple rounds of gorgeous, fragrant flowers. You’ll need to “deadhead” the stems when the blooms spoil to encourage new growth and further flowering rounds. Plant them in a sheltered, well-drained flower bed that receives good sunlight throughout the day.
The Blue Bird is a relatively high maintenance delphinium. This type is prone to bouts of slug, snail, and cyclamen infestations, so keep an eye on the underside of the leaves and remove any dead plant mater regularly. Powdery mildew is also something to be concerned with and requires immediate mold treatment.