Zantedeschia 'Kiwi Blush' is subtle yet stunning with white spathes with pink bases.

Zantedeschia 'Majestic Red' displays dark red trumpet-shaped flowers with black bases.

Zantedeschia 'Mercedes' has glowing orange trumpet-shaped flowers above bright green leaves with white spots.

Zantedeschia 'Millenium Gold' is a spotted calla lily with bright yellow trumpet-shaped flowers with green bases.

Zantedeschia 'Nashville' has yellow and magenta, trumpet-shaped flowers above bright green leaves with white spots.

Zantedeschia 'Odessa' has purple-black, trumpet-shaped flowers and green leaves spotted in white.

Zantedeschia 'Pasja' is a calla lily with flowers that open purple and lighten towards shades of pink.

Zantedeschia 'Picasso' displays bi-colours of purple and white trumpet-shaped flowers with green leaves spotted white.

Zantedeschia 'Red Alert' is a Calla Lily with orange-red trumpet flowers with green and spotted white foliage.

Zantedeschia 'Snow Storm' has pure white trumpet-shaped flowers with green bases and bright green leaves with white spots.

Zantedeschia 'Summer Fun' has bright yellow trumpet-shaped flowers with green bases and bright green leaves with white spots.

Zauschneria arizonica is smothered in hummingbird-adored, tubular, orange-scarlet flowers from late summer into fall.

Zauschneria 'Orange Carpet' produces masses of tubular orange-scarlet flowers loved by hummingbirds.

Zinnia grandiflora 'Gold on Blue' is hardy to zone 4 with fine, textured, bluish-green foliage topped with golden yellow flowers all summer.