I’m not sure what it is about white, perhaps it’s purity or innocence, but I love white flowers. White flowers have a tendency to pop out at you, especially in the evening when everything else is hidden with the dark. White flowers also have a way of calming a hot bed that is full of orange and yellow flowers. Regardless of the colours you have chosen, white flowers will always blend in effortlessly.
Shasta Daisy (Leucanthemum x superbum ‘Snowdrift’) is a newer strain which has double white daisies with a yellow eye. About 2 feet tall it is great for cutting and can even be used in tubs. If you remove the faded flowers it will increase it’s blooming time.
Blazing Star (Liatris spicata ‘Floristan White’) has densely packed spikes of pure white flowers. Great for cut flowers or used in a mass planting. Super hardy to zone 2.
Salvia nemerosa ‘Snow Hill’ has bright white spikes of long lasting flowers. Great drought tolerant plant for blooms in June to July. A quick haircut after it blooms will probably yield a second flush in the fall.
Feverfew (Tanacetum P. double white) forms a low busy mound of fragrant leaves and double white pompon flowers in mid summer. A short lived perennial but will self seed. Makes an excellent cut flower.
Daylily ‘White Hot’ Although there is no such thing as a true white daylily, some are getting very close. The cultivar White Hot is a large flower and very beautiful.
For more info on white flowers check out my post White in the Garden