Calla Lily
Zantedeschia 'Hercules'

Family: Araceae (a-RAY-see-ee) (Info)
Genus: Zantedeschia (zan-te-DES-kee-uh) (Info)
Cultivar: Hercules



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

Water Requirements:

Requires consistently moist soil; do not let dry out between waterings

Where to Grow:

Suitable for growing in containers


6-8 ft. (1.8-2.4 m)


6-8 ft. (1.8-2.4 m)


USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Blooms all year

Blooms repeatedly


Grown for foliage




Provides winter interest

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Remove fleshy coating on seeds before storing

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed


This plant has been said to grow in the following regions:

San Francisco, California

San Jose, California

San Leandro, California

Somis, California

Portland, Oregon

Richmond, Texas

show all

Gardeners' Notes:


On Feb 16, 2008, vossner from Richmond, TX (Zone 9a) wrote:

This is the non-spotted Hercules, which I bought from Kartuz, which in turn bought theirs from Western Hills many years ago.

It bloomed for the first time in Feb 2008. Flower not very big but it is a young plant. Planted inground, partial sun. Has not gone dormant in the 2 years I've grown it.


On Feb 5, 2008, Kell from Northern California, CA (Zone 9b) wrote:

This is the cultivar Strybing Arboretum in San Francisco is growing and selling that originally came from Western Hills Nursery in Occidental, CA. It is a huge variety with great white spots. There is also a nonspotted one with the same name that also came from Western Hills Nursery years ago to add to the confusion. The Strybing calls it Zantedeschia "Hercules" though many sources call it Zantedeschia aethiopica "Hercules".

In warmer areas it will bloom year round.