Hibiscus syriacus 'Blue Marlin' (Blue Marlin Althea)

The Blue Marlin Althea, scientifically known as Hibiscus syriacus 'Blue Marlin', is a beautiful deciduous shrub with blue flowers featuring a red eye. This cultivar of the common hibiscus is known for its stunning ornamental value and is a favorite among gardeners. It grows up to a height of 12 feet and has a spreading width of about 6 feet, making it an ideal choice as a focal point or hedge plant. The Blue Marlin Althea thrives best in USDA Hardiness Zones 5-9.