Agave Varieties

4. Plant Description and Characteristics

Agave parryi var. couesii forms a striking, symmetrical rosette, typically reaching a mature height and width of 2 to 3 feet (60 to 90 cm). Its distinguishing features include: the leaves that are thick, fleshy, and lance-shaped, exhibiting a beautiful silvery-blue or glaucous color. The leaf margins are lined with sharp, reddish to dark brown teeth-like spines. A robust, dark brown terminal spine, or "apical spine," crowns its leaf display. The leaves curve gracefully adding to the plant’s elegance. Its compact size and the intense silver-blue hue of its leaves are the primary characteristics setting this variety apart from other Agave parryi varieties, such as Agave parryi var. huachucensis and Agave parryi var. parryi.

4. Plant Description and Characteristics

This is where Agave nizandensis displays its true beauty. The leaves are generally lanceolate (lance-shaped) and arranged in a tightly packed rosette. They are a striking shade of bluish-green to gray-green, often acquiring a yellowish hue when grown in full sun. The leaves are fleshy and leathery in texture. The margins of the leaves are armed with reddish-brown spines that are relatively small and not as formidable as some other agave species. The tips of the leaves terminate in a sharp, brown terminal spine. The rosette is a medium size, typically reaching up to a meter in height and spread, forming a solitary display.

4. Plant Description and Characteristics

The Huachuca Agave is a visually striking plant with a symmetrical rosette shape. Its captivating form, with its broad, gray-blue leaves and formidable spines, makes it an iconic choice for xeriscaping and garden designs.

4. Plant Description and Characteristics

Agave nussaviorum is a relatively compact agave, forming symmetrical rosettes. Its standout features are its vibrant, blue-green leaves with a waxy bloom. They are lanceolate (lance-shaped) and slightly recurved, adding to the plant’s elegant form. The margins are lined with small, reddish-brown teeth, and the terminal spine is sharp and also reddish-brown; these characteristics, especially the spine, are crucial for protection from herbivores in its wild habitat.

4. Plant Description and Characteristics

The Agave parryi var. huachucensis ‘Wakefield’ is a slow-growing, evergreen succulent known for its stunning architectural form. The defining traits of the ‘Wakefield’ agave are its icy-blue, thick, fleshy leaves arranged symmetrically around a central point. These leaves possess formidable spines and marginal teeth. This provides a unique aesthetic, making this agave a top choice for gardens in arid landscapes.

4. Plant Description and Characteristics:

Agave obscura is a relatively large agave, typically forming rosettes that can reach 1.2 to 1.8 meters (4 to 6 feet) in height and width at maturity. It is a monocarpic species, which means it flowers only once in its lifetime, dying shortly after seed distribution. The leaves are a key feature, distinguished by their dark green or blue-green color, lance-like shape, thickness, and fleshy texture. The margins of these leaves are a standout characteristic, lined with short, dark, and sharply pointed spines, providing a visual and tactile warning. In intense sunlight, the leaves can adopt distinct red tinges, adding further visual interest to the plant. When flowering, it produces a tall, imposing inflorescence (flower stalk) that can reach 4-6 m (13-20 feet) in height, with yellowish flowers and horizontal branching.

4. Plant Description and Characteristics
Agave parryi var. truncata is a compact agave, forming a symmetrical rosette that typically reaches 1-2 feet in height and 2-3 feet in diameter at maturity. Its slow growth rate contributes to its appeal as a desirable, relatively low-maintenance plant. The leaves are thick, fleshy, and rigid, contributing to the plant’s distinctly architectural quality. They are a striking blue-gray, often exhibiting a subtle dusting of glaucous wax that enhances their visual appeal. Broadly lanceolate to ovate, the leaves are characterized by their rounded, blunt (truncated) tips, a defining feature that differentiates them from other Agave species. This contrasts notably with the sharp terminal spines often found in other Parryi agaves, such as A. parryi. The leaf margins are lined with small, reddish-brown teeth, adding a textural element to the rosette, although these are typically less prominent than in other species. The rosette’s tightly packed form is maintained even as the plant matures, giving it a consistently neat and orderly appearance, and subtle and interesting markings are sometimes present on the leaves.

Agave obscura ‘Xalapa’ is a truly majestic agave, characterized by some features, including:

• Size and Growth Habit: This agave forms a dense, symmetrical rosette, reaching a mature height of approximately 60-90 cm (2-3 feet) and a similar width. It typically displays a solitary growth habit, forming a single, impressive plant that is slow growing, making for a beautiful and long impact.
• Leaf Characteristics: The leaves are thick, rigid, fleshy, and somewhat fleshy, exhibiting a lanceolate (spear-like) shape that tapers to a sharp, dark tip. They generally range from a dark, almost blue-green hue, and can display some lighter-green coloration. The margins of the leaves are usually smooth or feature small, reddish-brown teeth. Spines are found at the tip of the leaves, typically small, and dark brown or black in color.
• Flower Characteristics: The Agave obscura ‘Xalapa’ is a monocarpic plant. It flowers only once in its lifetime, typically after many years of growth, sometimes a decade or more. The flower stalk, known as a scape, can ascend to a significant height, bearing a panicle or spike of yellow flowers. After flowering, the plant dies, but it will often produce offsets before its demise.
• Unique Features: One of the most attractive unique selling points of the ‘Xalapa’ variant is its colder temperature tolerance than many other Agave varieties, which makes it an attractive potential plant for areas with colder climates. Its rosette form tends to be denser and more compact than some similar species, giving it a truly unique silhouette.

4. Plant Description and Characteristics

Agave parryi x Agave flexispina showcases the combined traits of its parent species, making it a visually appealing and diverse plant. From a landscape design perspective, it provides a captivating contrast through its leaf colors, spine patterns, and overall form. The hybrid’s variation in leaf color is one of its greatest appeals, ranging from blue-grey to grey, which is more in line with Agave parryi, the margins are often adorned with prominent, dark brown or black spines that are often lighter and softer than those seen with Agave parryi. This combination of color and striking edge definition creates a focal point, contributing to the overall aesthetic appeal.

3. Common Names and Etymology

Agave ocahui var. ocahui doesn’t have an abundance of common names, likely due to its more restricted geographic distribution and less intense cultivation compared to better-known agave species. Common names include:

• Ocahui Agave: This name is derived directly from the scientific name, reflecting its origin.
• Lechuguilla: In some regions of northern Mexico and the southwest United States, this name is sometimes used, although it is more commonly used for other Agave species.

The scientific name, "Agave ocahui var. ocahui," indicates its lineage within the Agave genus and its specific location of origin. "Agave" (from Greek agavos or agaue meaning "noble" or "admirable") and "ocahui" refers to the town of Ocahui, located in the county of Bacoachi along with the Mexican state of Sonora, where the plant was first described. "Ocahui" in the varietal name signifies that it is a variant of the species Agave ocahui.