Here are many Delphiniums that are blooming in my garden. There are SO many colors and variations. There are the shorter plants that have flowers compacted together and then some grow tall with large spaces between the flowers. The color variations are incredible, with a white or black eye. Colors range in every shade of blue and purple, with the occasional white or pink. They are very cold hardy, as they survive temperatures down to the -40's. They like moisture, but are quite drought tolerant. They do best in partial shade, but do well in full sun or full shade. Best of all - HUMMINGBIRDS LOVE THEM! Below is one photo I was able to capture a couple years back of a RARE Rufous in my region, but the Rubies go over the top mad for them year after year! I can't give you any information as to how they grow in very hot climates, but they are rated for zones 3 to 8, and I can tell you from experience, they have survived my zone 2 quite well. They self seed and may produce a wide variation of colors, with about 50 percent coming true to type of the original parent plant. They can grow from 30 inches to 8 feet depending on the variety, and taller ones frequently need staking. They can produce a Delphinium worm which early in the season tries to consume the flower growth at the top of the stalk. If caught early, it won't affect the flowering of that year.
If you are looking for a hummingbird flower to add to your collection, these are definitely on the top of my list.
Much of the year I spend time attracting hummingbirds and other species to my garden. Please take some time to read and enjoy my blog. I hope it inspires you to build and create a beautiful place to attract birds of your own.