Plants With Blue Flowers – A Splash of Colors In The Garden

by Paul Ciocoiu · Published July 22, 2015 · Updated July 22, 2015

We saw, in a different article, that blue is a dominant presence in the interior design color trends this year. In the garden, too, blue, combined with the natural green, creates strong contrasts that please the eye and give the space around a perfect visual balance. We will show in the article below some plants with blue flowers to inspire you in making the right choice if seeking to get a fascinating color mix in your garden.

Blue hydrangea is a plant with big, sky blue flowers that are absolutely breathtaking. Get your big leaf hydrangeas to turn clear, sky blue by increasing the acidity of the soil. Adding soil sulfur is one way to do this. It grows well in morning sun and afternoon shade with moist, well-drained soil that’s rich in organic matter.

Plants with blue flowers – blue hydrangea

Geraniums are popular flowers which come in different colors. The species also known as Rozanne produces beautiful violet-blue flowers that will enchant you from June to frost.

Plants with blue flowers – geraniums

Cornflower or Centaurea Cyanus couldn’t miss our list. A perennial annual flower which can grow up to one meter in height, the plant reaches maturity in July-September producing flowers of two types: sterile and blue and fertile and violet.

Plants with blue flowers – cornflower

Morning glory is a fast growing climber with twining stems. This variety of morning glory bears sky blue, funnel-shaped flowers with white centers throughout summer, but the colors can vary from white to pink as well.

Plants with blue flowers – morning glory

The Japanese Iris or Iris Sibirica or Perry’s Blue is a herbaceous perennial plant with narrow, star-shaped leaves. In late spring to early summer it bears clear blue flowers with white and yellow markings and dark blue veins on the falls.

Plants with blue flowers – Perry’s blue

Delphinium is another little demanding plant with blue flowers, growing well in a dry environment. Flowers can grow up to a 2 meter height at the top of the stem, with colors ranging from white, pink, red, blue and purple, depending on the climate.

Plants with blue flowers – delphinium

Grape hyacinth is another plant with amazingly beautiful flowers, growing in clusters of different colors. It grows very well either in sun or shade, but in well-drained soil.

Plants with blue flowers – grape hyacinth

Butterfly bush or Buddleja davidii is a large variety with arching branches, lance shaped leaves, and panicles of scented pale blue flowers. Nectar rich plants encourage beneficial wildlife into the garden by attracting pollinators.

Plants with blue flowers – butterfly bush

Last, but not least, Penstemon or sour grape is a plant with grape colored flowers, blooming from July to October. The sun loving plant can grow as tall as one meters only two years after being planted.