Yucca rostrata

Yucca rostrata Engelmann ex Trelease, in Mo. Bot. Gard. Ann. Rpt. 13: 68. 1902.

Yucca rostrata.
Growing in Agder Natur Museum's Botanical Garden's Greenhouse, Kristiansand, Norway.
Photo by Benny Moeller Jensen ©1999-2005.

Subspecies, varieties and forma:
Yucca rostrata forma integra Trelease, Mo. Bot. Gard. Ann. Rpt. 22:102, 1911. Probably a synonym!
Yucca rostrata forma viridis

Type location:
Monclova, Mexico.

Eastern Coahuila, Northern Chihuahua, Mexico, Brewster Co., Texas, Trans Pecos area, west of Rio Grande, Texas, at 600 - 800 m.

Short description of the species:
Plants arborescent with 1 to 5 stems up to 350 cm tall and 18 to 32 cm thick, rosettes with many leaves, occasionally with up to 3 "branches" towards the top. Leaves, grey-green to bluish-green, 25 - 60 cm long, 1 to 1,5 cm wide, margin of the leaves yellow with short sharp "teeth's". Inflorescens paniculate, 100 to 150 cm tall. Scape held high above the leaves 35 to 70 cm long. Branchlets many, 2 to 35 cm long. Flowers globose (round) to campanulate (bell shaped), 5 to 6,5 cm long, white. Fruit 3,5 to 7 cm long, 1,8 to 2,5 cm thick. Seeds black dull, 0,4 to 0,5 x 0,6 to 0,7 cm, without marginal wing.

Yucca rostrata is related to:
Yucca cernua, status not sure, maybe a natural hybrid with genes from Yucca rupicola or Yucca pallida?
Yucca reverchoni
Yucca rupicola
Yucca thompsoniana
Yucca pallida

For Denmark is not known, but I have knowledge of two large plants with a height of 275 cm 180 cm (9 ft. and 6 ft.) both are cultivated in in Tulsa, Oklahoma, both have been in the ground for approximately 10 years, and have survived -23°C (-11°F) with no damage or protection.  I also have had report of a plant from New Jersey, USA, that also have been there for several years.

If the plants rosette dies in a very cold winter, do not throw the plant away, there are several reports from growers around the world, that it might regrow from the roots.

My own plants of Yucca rostrata:

2266 Yucca rostrata bought in 2003, until spring 2009 it was grown in a 90 liter pot. Now it's planted inside the unheated greenhouse.
JAugust 2nd. 2007.
Photo by Elena Y. G. Jensen © 2007
June 16th. 2009.
Photo by Elena Y. G. Jensen © 2009
Transportation damage, like whiplash effect.
June 16th. 2009.
Photo by Elena Y. G. Jensen © 2009
Leaf detail.
June 16th. 2009.
Photo by Elena Y. G. Jensen © 2009
Leaf detail.
June 16th. 2009.
Photo by Elena Y. G. Jensen © 2009
Flower bud.
August 29th. 2009.
Photo by Benny M. Jensen © 2009
Flower bud.
August 29th. 2009.
Photo by Benny M. Jensen © 2009

1016 Yucca rostrata, Texas Redford, s1998, MG 1999 blue leaves.
2220 Yucca rostrata, Mexico, Sierra del Carmen, MB810, s2009, from Michael Bechtold.
2221 Yucca rostrata "Green form", Mexico, San Carlos, MB805, s2009, from Michael Bechtold.

I do not have any pictures of this species i bloom, if you have a photo that I may use please let me know
Yucca rostrata in habitat.
Photo by J. R. Manhart ©1999


This plant is at a house in the town Beach Haven West in the center of New Jersey, USA.
It is about 9' tall and beautiful! It has been there for years and has an eastern exposure.
Photo by Joe Thiel, New Jersey ©2001-2005
Yucca rostrata
Grown in Alexander Heim's garden in his Greece. Copyright 2008 Alexander Heim.
Yucca rostrata
A beautiful specimen grown for years in Tim Behan's garden Massachusetts, U.S.A., USDA Zone 5-6.
Copyright 2009 Tim Behan.
Yucca rostrata
at Jurupa Mountains Cultural Center in Riverside, California, USA.
This plant was a donation recieved in 2002, to supplement their large collection which is more than 30 years old. the plant is estimated to be more than 150 years old! Photo by Buck Hemenway ©2002


Yucca rostrata in bud in the garden ofRuud Wouterson, The Netherlands 2008.


HOCHSTAETTER, F., Succulenta, Netherlands, Vol. 78 no. 5, 207-217, Yucca (Agavaceae) part 5,
TRELEASE, in Mo. Bot. Gard. Ann. Rpt. 13: 68. 1902.
WEBBER, Agric. Monograph U.S.D.A. 17:22-23 (1953)

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Benny Møller Jensen