True blue flowers are hard to find in many gardens although Purple, Lavender, Lilac, Mauve and Violet exist in many shades. Since there are no true blue Roses, Peonies, Dahlias, Daffodils or even Tulips these showy flowers are out. So if you find a good strong blue then stick to it and use it with great abandon.
This Delphinium was in our garden 20 years ago when we arrived and it has given great service. Unlike my spade that has had 2 new blades and 6 new handles the Delphinium is the original stock. Give or take an occassional cutting it is as new each summer with its tall spires of the strongest, clearest blue you could desire.
Good blue plants include Ceanothus impressus, Corydalis flexuosa and the Gentians. In bulbs there are blue Muscari, Chionodoxa and the Agapanthus. Hydrangea macrophylla Blue Wave is one of the bluer hydrangea but most plants labled or called blue are pale imitations.
If your favouirite plant is missing from this list let me know.
I like forget me nots, but they don’t live long for me. My favorite blues are amsonias, and baptisias, but your delphinium is sure pretty.