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
NEW  2026 PLANTS

LIVE AVAILABILITY
  for JULY


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

 
Products > Agave difformis
 
Agave difformis

Note: This plant is no longer in stock. This is an archive page preserved for informational use.  
Image of Agave difformis
 
Habit and Cultural Information
Category: Succulent
Family: Agavaceae (now Asparagaceae)
Origin: Mexico (North America)
Evergreen: Yes
Flower Color: Yellow
Bloomtime: Infrequent
Synonyms: [A. lophantha 'RBG', Hort.]
Height: 1-2 feet
Width: 2-3 feet
Exposure: Full Sun
Summer Dry: Yes
Deer Tolerant: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 15-20° F
May be Poisonous  (More Info): Yes
Agave difformis - A small to medium-sized rhizomatous agave to 18 inches tall with narrow (1 inch wide) upright medium olive-green leaves that have a very pale gray-green, nearly white, midrib and pale gray downturned spines along the leaf margin. Plant in full sun. Drought tolerant. Hardy to at least 15 F. Agave difformis is a variable species and a close relative to Agave lophantha and Agave lechuguilla that grows at elevations of 5,000-6000' in rocky soils on the desert side of the Sierra Madre Occidental in Hidalgo and San Luis Potosi in North Central Mexico. The specific epithet 'difformis' given to this species by Alwin Berger when he first described the plant in "Die Agaven" was presumably because the clone he described had some leaf margins with spines and others lacking them. We have grown this plant since 2006 listed as Agave lopantha 'RBG' in the belief that it came so tagged from the Ruth Bancroft Garden. Several people commented that it looked more like a form of Agave lechuguilla than A. lophantha and one of them, Ruth Bancroft curator Brian Kemble, noted that the plant also did not come from their garden. Our thanks to Greg Starr who noted that this plant was nearly identical to seed grown plants that he had of Agave difformis. 

Information displayed on this page about Agave difformis is based on our research conducted about this plant in our nursery library as well as from information provided by reliable online resources. We also include our own observations made about it as it has grown in the nursery gardens and other gardens visited, as well how the crops of this plant performed in the containers in our nursery field. We will 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.

 
San Marcos Growers closed for regular business at the end of 2025 as the property is being developed for affordable housing.
While our gates remain closed, we will open them by appointment so we can liquidate remaining plants, supplies and equipment. The plants remaining in the field are listed on our Live Inventory Page.
 
  [MORE INFO]