San Marcos Growers LogoSan Marcos Growers
Home Products Purchase Gardens About Us Resources Contact Us
Nursery Closure
Search Utilities
Plant Database
Search Plant Name
Detail Search Avanced Search Go Button
Search by size, origins,
details, cultural needs
Website Search Search Website GO button
Search for any word
Site Map
Retail Locator
Plant Listings

PLANT TYPE
PLANT GEOGRAPHY
PLANT INDEX
ALL PLANT LIST
PLANT IMAGE INDEX
PLANT INTROS
SPECIALTY CROPS
SMG NEW PLANTS

LIVE AVAILABILITY
  for SEPTEMBER


Natives at San Marcos Growers
Succulents at San Marcos Growers
 Weather Station

 
Products > Zantedeschia aethiopica 'Gene's Giant'
 
Zantedeschia aethiopica 'Gene's Giant' - Giant Calla Lily

San Marcos Growers has permanently closed as a business. This is an archived page preserved for informational use.  

 
Habit and Cultural Information
Category: Bulb/Tuber/Rhizome etc.
Family: Araceae (Arums)
Origin: South Africa (Africa)
Red/Purple Foliage: Yes
Flower Color: White
Bloomtime: Spring/Summer
Height: 2-4 feet
Width: 4-5 feet
Exposure: Cool Sun/Light Shade
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 15-20° F
May be Poisonous  (More Info): Yes
Zantedeschia aethiopica 'Gene's Giant' (Giant Calla Lily) - A robust herbaceous perennial that forms a large clump of arrow-shaped leaves that grows to 5 feet tall with an equal height stem bearing a single very large white flower (technically a bract called a spathe that surrounds the spike of fragrant yellow flowers in the center that is called a spadix). This is a real giant of a calla lily! This species of calla can be evergreen on the coast if irrigated during summer months but is otherwise summer dormant. In colder climates it can freeze back with a frost but quickly recover. In coastal irrigated gardens flowering is often year-round or in late winter to early summer if not irrigated.

Plant in full coastal sun or light shade with seasonally or year-round moist soil. Tolerates near coastal conditions, summer drought, wet conditions and winter cold. It can freeze back with a frost but quickly recovers and is suitable to a dry garden as it persists as a summer dormant plant in cool coastal gardens without supplemental irrigation but is also useful in well-irrigated gardens or along the edge of a pond where it can remain more evergreen. It can also grow as a foliage plant in deep shade where it likely will not bloom as much. Flowers and leaves are excellent for use in arrangement that lasts a long time when cut and submerged in water. Though animals eat this plant and African indigenous people have boiled and eaten plant parts, all parts of this plant are considered poisonous because they contain microscopic, sharp calcium oxalate crystals.

For more information on this species see our listing for Zantedeschia aethiopica. The selection 'Gene's Giant' was made at San Marcos Growers in 1999 after it came up in soil reused from our production dump pike was used for a container planting. This calla emerged and quickly took over the planting and was noted as being larger than a typical Calla Lily. We named it for our shipping manager Gene Leisch, who had created many of our interesting container plantings and was the one who first inadvertently potted this plant up. We were able to build stock on it to begin selling in 2003 and it has amazed everyone with its robust size ever since. 

The information displayed on this page about Zantedeschia aethiopica 'Gene's Giant' is based on our research conducted about this plant from books in our nursery library as well as from information that is provided by reliable online resources. We also have included our own observations made about it as it grew in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers when we had them in our nursery field. We also include comments received from others and welcome hearing from anyone who has information about this plant, particularly if it includes cultural information aiding others to better grow it.

 
We closed for regular business at the end of 2025 in order for the property to be developed for affordable housing.
Our gates remain closed but we will open them by appointment to interested parties as we liquidate remaining supplies and equipment.
 
  [MORE INFO]