Delphiniums

Zones: 3 to 7
Bloom Time: Late spring to early summer
Height: 30″ to 36″

Delphiniums are a perennial that are topped by tall, spiked blooms. They are one of the plants that produces true blue flowers.

You can find them HERE.*

Like Foxgloves, they will do well at the back of the border and may require staking to prevent them from falling over.