Liatris Alba also known as White Blazing Star is white and is bee friendly.
White
Details:
Cut Flowers
Pollinator
Liatris like well-drained soil and sunshine.
Good for beds, borders and as cut flowers.
Planting: 5cm/2 inches 10cm/4 inches
Good for beds, borders and as cut flowers.
Flowering: June/July 60cm/24 inches