Trees with blue flowers. 10 great shrubs with blue or lavender flowers azaleas rhododendron spp rhododendrons rhododendron spp lavender lavendula spp. Also called sage tree for its aromatic leaves chaste tree is a native small tree growing to 10 to 20 feet tall. 12 best garden plants with blue flowers false indigo baptisia australis a close look at the leaves and flowers. Star magnolia tree native to japan is one of the first trees to bloom in spring.
Often a blended hue of violet indigo or blue creates a bluish flower. Bluepurple flowering trees weve selected the very best blue or purple flowering trees shrubs and climbers here. Borage borago officinalis borago officinalis is an underused plant. To keep your petals blue aim for a ph of about 52 to 55.
Blue mist shrub caryopteris x clandonensis the blue mist shrub caryopteris x clandonensis. Known as the lily of the nile the african lily grows large clusters of blue or white flowers. Its white flowers open before its own leaves have appeared at a time when most other trees are just starting to bud. Jacaranda mimosifolia is a sub tropical tree native to south central south america that has been widely planted elsewhere because of its attractive and long lasting pale indigo flowers.
The blooms hold above their grass like foliage throughout most of the summer. One of the few true blue flowers hydrangeas can change color based on the ph level of their soil. Grow these trees in the garden where frosts never occur typically in usda hardiness zones 9 and warmer. Bright blue flowers start opening in early summer and continue until frost.
It is also known as jacaranda blue jacaranda black poui or as the fern tree. The star magnolia is smaller than the saucer magnolias reaching a height of 15 to 20 feet with a similar spread.