A medium-sized switch grass with strongly upright blue-green foliage that quickly turns to burgundy-red as the sun heats up.

Panicum 'Northwind' is a Perennial Plant of the Year forming stately bluish green exclamation points for the garden.

Panicum virgatum 'Shenandoah' has strongly upright steely blue foliage with burgundy red highlights.

Panicum virgatum 'Totem Pole' forms a strongly upright column of steel blue leaves and powder blue stems to 6 feet.

Passiflora caerulea is one of the hardiest of passionflowers with blue, black and white flowers.

Passiflora 'Alba' is a pure white form of the hardy blue passion flower.

Passiflora 'Clear Sky' has greater vigour and larger flowers with greater substance.

This is our selection of the hardy blue passionflower, Passiflora caerulea, with larger flowers with bluer blues and blacker blacks!

Passiflora edulis 'Frederick' is a gorgeous and delicious, self fertile passionflower. Grow your own passionfruit!

Passiflora edulis 'Nancy Garrison' is a gorgeous and delicious, self fertile passionflower. Grow your own passionfruit!

Passiflora edulis 'Possum Purple' is a gorgeous and delicious, self fertile passionflower. Grow your own passionfruit!

The hardiest of all passionflowers, Passiflora incarnata has ornate purple and lavender flowers and tasty fruit.

The hardiest of all passionflowers, Passiflora incarnata 'Alba' has ornate white flowers and tasty fruit.

The hardiest of all passionflowers, Passiflora incarnata 'BluePop' has ornate bluish flowers and tasty fruit.

The hardiest of all passionflowers, Passiflora incarnata 'Pink Pop' has ornate lavender-pink flowers and tasty fruit.

The hardiest of all passionflowers, Passiflora incarnata 'SnowPop' has ornate white flowers and tasty fruit.

Passiflora quadrangularis or giant granadilla has large red and purple, cinnamon and nutmeg scented flowers and huge, edible fruit.

Passiflora 'Betty Myles Young' offers exquisitely detailed, large, lightly scented passionflowers.

Passiflora 'Damsel's Delight' has large, spectacular blooms with white tepals tinged with lavender-pink and dark purple and black corona filaments.

Passiflora 'Incense' is a stunning passionflower with ornate violet flowers with pink and white highlights.

Passiflora 'Justine Lyons' has lavender-purple, reflexed tepals with thin deeper purple corona filaments and light fragrance.

Passiflora 'Party Animal' is an improved P. caerulea with white tepals and black, white and purple corona filaments.

Passiflora 'Silly Cow'/'Damsel's Delight' has dark purple filaments against pale lilac petals. Gorgeous.

Passiflora 'Snow Queen' has large, strongly fragrant, pure white flowers with long corona filaments.

Passiflora 'Star of Surbiton' has pure white petals that form the backdrop for bright purple-blue filaments.