Agave - Utahensis v Eborispina
*** PLEASE NOTE - STOCK IS CURRENTLY SMALL ***
Agave utahensis var. eborispina is an extraordinary and highly sought-after succulent, famous for its dramatic, ivory-white terminal spines that can grow longer than the leaves themselves. Originating from the high-desert limestone cliffs of Nevada and California, this variety is prized by collectors for its rugged, prehistoric appearance and its incredible ability to withstand extreme temperatures.
Key Features of Agave utahensis var. eborispina
Dramatic Ivory Spines: Renowned for its exceptionally long, twisted, and papery terminal spines that transition from dark brown to a striking ivory white as they mature.
Compact, Globose Form: Forms a tight, spherical rosette of stiff, blue-green to grey-green leaves.
Slow Growth Habit: A slow-growing variety that maintains its sculptural integrity for many years, making it a perfect specimen plant.
Pronounced Marginal Teeth: The edges of the leaves are lined with sharp, prominent teeth that add to its fierce, architectural silhouette.
Extreme Hardiness: One of the most cold-hardy agaves, capable of surviving significant freezes if kept dry.
Monocarpic Nature: Like other agaves, it will flower once at the end of its life cycle (often after decades), producing a tall woody stalk before the main plant dies, usually leaving behind small offsets.
Care for Your Agave utahensis var. eborispina
Light: Thrives in full sun. High light intensity is crucial to developing the signature long, white spines and maintaining its compact shape.
Soil: Requires exceptionally well-draining, gritty soil. A mix of pumice, lava rock, and coarse sand with minimal organic matter is best to mimic its natural limestone habitat.
Watering: Water very sparingly. This variety is highly susceptible to rot; allow the substrate to dry out completely. In winter, keep the plant almost entirely dry.
Temperature: Remarkably cold-hardy (down to -10°C or lower if bone dry), but also thrives in intense summer heat.
Humidity: Prefers low humidity and excellent air circulation. High humidity combined with wet soil is the primary threat to this species.
Maintenance for a Thriving Agave utahensis var. eborispina
Removing Dead Leaves: Use long-handled tweezers or tongs to remove old, withered leaves at the base to avoid injury from the spines.
Handling Spines: Use extreme caution. The spines are very long and sharp; it is often recommended to use "potting sleeves" or thick gloves when moving the plant.
Repotting: Rare repotting is needed due to its slow growth. When necessary, use a terracotta pot to help wick away excess moisture and provide stability for the heavy rosette.
Pest Control: Generally pest-resistant, but occasionally susceptible to agave snout weevil or scale. Inspect the core regularly for signs of stress.
Fertilizing: Rarely needs fertilizer. A very weak, low-nitrogen fertilizer can be applied once in late spring to support health.
Propagation Methods for Expanding Your Collection
Offsets (Pups): While it produces fewer offsets than other species, it will occasionally grow "pups" at the base. These can be removed with a clean knife once they are large enough to handle.
Seed: Most commonly grown from seed by specialist collectors. Germination requires patience and very free-draining media, but it is the best way to observe the variation in spine development.
Agave utahensis var. eborispina is a true "holy grail" for succulent enthusiasts, valued for its stark, desert-hardened beauty and its incredible ivory crown. Its slow growth and architectural presence make it a standout centerpiece for any specialized collection.
* Picture and information intended only as a guide. Size and colours of plants will vary, not any 1 plant is exactly the same and minor variations will occur.
** All plants will be posted bare rooted.
