These are Filipendulas, one of my favorite garden plants.
Filipendula rubra also called Meadow Sweet or Queen of the Prairie is tall 4-6' and medium pink with fluffy heads that are 4-6" across.
Filipendula ulmaria variegata has striking variegated foliage with white cream fluffy flower heads and about 3' tall.
Filipendula purpurea 'Elegans' has deep hot pink flowers and gets about 3-4' tall.
All Filipendulas like consistently moist soil, full sun, bloom late spring through summer here in the pacific northwest. Good in zones 3-8 and attract butterflies,bees and birds. The Queen of the Praire rubra spreads by underground runners and can be invasive but the others stay in a nice clump and get wide pretty fast so you have a nice size plant in no time. Easy to share with friends or move around the garden by dividing in early spring or fall.