For a while it was all purple and white, now the pinks are making their stand in the garden. Here are some more combinations of plants that look good together and bloom at the same time:
Siberian Iris, Baptisia and Peonies
"Bowl of Beauty" peony with purple Siberian iris is a combo I came up with a couple years ago. I had such young peony plants that it's taken until this spring to see if it would work. It works! The plants are still young—only two blooms each this year, but I love how the sword-like leaves of the iris cut through the peony leaves.
Adding baptisia brings in another spiky, purple element. Plants take a while to establish and don't like to be moved once they are settled. These are four years old now. They don't re-bloom but the foliage stays nice for the entire season and surprisingly, the plant doesn't need stakes or a hoop. Perfect posture from April to October.
Baptisia and Poppies
This is another pairing I came up with because I love purple and red together. Depending on temperatures and weather conditions, the bloom time of these two is approximate but this year it was spot-on together.
Poppies are my signature flower (my dad calls me "Poppy"). Besides the red ones here, I have pink ones in the lower garden, and white ones that I transplanted last year, now growing next to some purple sage. Poppies don't like to be transplanted. You can divide them easily enough in spring or fall, but you forfeit a bloom season because they sulk through the next year.
I love pink poppies with any silver-grey foliage like lambs ears or rose campion.
Lady's Mantle and Everything
Did I mention lady's mantle is the greatest filler flower in the world? And that it and geraniums make an especially awesome p—... All right, just making sure.