Delphinium oxysepalum by Opiola Jerzy (Own work) [GFDL (, CC-BY-SA-3.0 ( or CC BY-SA 2.5-2.0-1.0 (], via Wikimedia Commons

Blue Delphiniums By Opiola Jerzy (Own work) [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.5-2.0-1.0], via Wikimedia Commons

Zone: 3 to 7

Sun, Part Sun

Bloom Time: Summer

Height: 1′ to 3′

Delphiniums are a summer-blooming perennial that provides truly blue flowers on long flower stalks. The standard varieties often need staking, so are a little more work than some of the plants on this list…but they are such a beautiful blue, I couldn’t leave them off!

Delphiniums ©Gerisch -
Delphiniums ©Gerisch –

Delphiniums also don’t like hot weather so tend to do better in northern climates than in the south.  But I love them so much that in my South Carolina garden, I plant them as annuals in the spring (they always die in the heat of the summer).

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