Agave Varieties

4. Plant Description and Characteristics

Agave attenuata subsp. attenuata is a striking, rosette-forming succulent. Its leaves are broad, fleshy, and lanceolate to ovate-shaped, gently curving upwards and outwards. A key distinction from many other agave species is the smooth and spineless edges of the leaves, giving it a softer, more approachable appearance. These light green leaves, often with a subtle bluish-gray undertone, have a smooth, waxy texture and typically measure 2-5 inches wide and 1.5-3 feet in length. After a significant period – potentially 8 to 20 years or more – the plant produces an arching flower stalk that can reach 10 feet in height bearing numerous pale yellow or greenish-yellow flowers that curve downwards, lending the plant its common names, "Swan’s Neck Agave" and "Foxtail". Notably, this agave is not monocarpic, meaning the plant can survive and continue to thrive after flowering, a unique and desirable trait for those who cherish this elegant succulent.

4. Plant Description and Characteristics

Agave congesta has a visually striking appearance that warrants its ornamental appeal.

• Size and Growth Habit: This agave generally forms a large, symmetrical rosette, reaching a mature height and width of between 3 to 5 feet. It often produces multiple rosettes from the base, creating a dense, clustered appearance. Growth is relatively quick amongst agaves, with the full size reached within a few years.

4. Plant Description and Characteristics

Agave aurea var. aurea presents a striking visual presence defined by distinctive features:

• Size and Growth Habit: This agave generally forms a relatively symmetrical rosette of leaves, reaching a mature size of approximately 2 to 3 feet in height and width. Its growth habit is considered slow and steady, forming a compact cluster of fleshy leaves.
• Leaf Characteristics: The defining trait of this agave is its richly colored, often golden, foliage. The leaves are generally lanceolate (spear-shaped), with a slightly incurved shape. The margins can be armed with small, reddish-brown spines. The texture is generally smooth, giving it a glossy appearance. Its leaves may show subtle markings, depending on environmental conditions. The variegation creates streaks of creamy white or yellow with the green.
• Flower Characteristics: Agave aurea var. aurea is monocarpic, meaning it flowers only once in its life cycle. The flower stalk, when it emerges, rapidly grows to be tall, reaching heights of up to 8-12 feet. The flower stalk is branched, and produces vibrant, typically yellow or reddish-yellow, flowers. The flowers are attractive but the plant dies after flowering.

4. Plant Description and Characteristics

The true beauty of Agave convallis lies in its striking simplicity. Its form, a study in elegant geometry, is a testament to nature’s design. The plant’s compact size, rarely exceeding a meter (3.3 feet) in height and width, makes it remarkably versatile. The leaves, the defining feature of this agave, are rigid, lance-shaped, and gracefully arching, a symphony of blue-grey or green hues, sometimes exhibiting a subtle glaucous coating that lends a soft, powdery finish. This subtle elegance is contrasted by the dark-brownish, marginal spines and a sharply pointed terminal spine – a natural defense system, reminding us of the plant’s resilient nature. This clean, uncluttered form, combined with its muted color palette, makes Agave convallis a remarkably adaptable specimen, perfectly suited to both modern and more traditional garden aesthetics.

4. Plant Description and Characteristics

Agave aurea var. capensis stands out with its distinctive appearance. The leaves are lanceolate (spear-shaped) and thick, fleshy, and typically a stunning golden yellow when young, maturing to a beautiful, deep green, providing a captivating contrast in the landscape. The margins of the leaves are smooth, and the leaf surface is typically smooth or has a slightly rougher texture in older plants, adding to its texture and visual interest. This agave grows slowly, forming dense rosettes. The plant will flower only once at maturity, after several years of growth (potentially 10-20 years), producing a tall, striking flower stalk, or inflorescence, the height of which produces yellow flowers, typically over a couple of months.

4. Plant Description and Characteristics

Agave convallis ‘Mitla Magic’ is an architectural marvel, a medium-sized agave that typically reaches a mature size of about 2-3 feet tall and 3-4 feet wide. Its symmetrical rosette form features a dense arrangement of leaves, creating a dramatic visual impact. The leaves are the true stars of the agave. They are broad, lanceolate (spear-shaped), and slightly curved, giving the plant a sculptural quality. The most striking feature is the cream to yellowish variegation that forms bold streaks along the leaf margins. The heart of the plant matures into a stunning blend of various shades of green, with the edges often displaying a reddish hue, particularly when stressed by sunlight or cold. These reddish tinges further enhance its visual appeal. The leaf margins are heavily toothed with sharp, reddish-brown spines. There may also be a terminal spine present at the leaf tip. The leaves feel firm to the touch, adding to the plant’s robust character.

4. Plant Description and Characteristics

Agave avellanidens is a medium-sized agave, typically reaching a height and width of around 1.2 to 1.8 meters (4-6 feet) when mature, though its size can depend on the resources available to it. Its growth habit is generally solitary, meaning it primarily forms a single, symmetrical rosette, although it occasionally produces offsets.

• Leaf Characteristics: The leaves are perhaps the most striking feature, exhibiting a beautiful form. They are thick, fleshy, and lanceolate (lance-shaped), tapering to a point at the tip. Their color is a rich, deep green, often with a distinctive reddish or purplish margin, especially when exposed to stress like drought or bright sunlight. This coloration helps to differentiate it from other agave species. The leaf margins are armed with small, reddish-brown teeth, and each leaf is tipped by a sharp, dark terminal spine, also generally a reddish-brown color.
• Flower Characteristics (if applicable): Agave avellanidens is monocarpic, meaning it flowers only once in its lifetime. The flower stalk, known as a quiote, can reach an impressive height of approximately 3-5 meters (10-16 feet). The stalk is generally unbranched, and the flowers are typically yellow and arranged in a dense cluster at the top. The plant dies after flowering, leaving behind seeds to perpetuate its genetics.
• Unique Features: The combination of the deep green leaves, the striking reddish edges, and the presence of small, toothy spines makes this species visually distinct and highly appealing. The relatively compact size compared to some other agave varieties makes it an excellent choice for smaller gardens or container planting.

Plant Description and Characteristics:

• Leaf Characteristics: Its leaves are the most distinctive feature, giving the plant its allure. They are lanceolate to ovate in shape, thick, and fleshy, with a beautiful silvery blue or glaucous color. The leaves are remarkably smooth, having a slight texture and covered in a powdery substance (bloom) that gives the plant a stunning, almost luminous glow.

4. Plant Description and Characteristics

Agave bracteosa is a slow-growing, clumping agave that forms a beautiful rosette. The leaves are narrow, lanceolate (lance-shaped), and usually a light or olive green. A highly defining characteristic is that Agave bracteosa is spineless – the leaf margins are smooth and entirely free of spines and teeth, offering a gentle, approachable aesthetic. The leaves gracefully curve outwards, creating a graceful, fountain-like appearance. Their texture feels remarkably soft compared to more spiky agave species.

4. Plant Description and Characteristics

Agave bulliana is a striking, solitary succulent. Its broad, lanceolate leaves, often a muted grey-green with a waxy texture, are its defining feature. At maturity, the plant forms a symmetrical, rosette-like shape, typically reaching a diameter of 3-5 feet and a height of 2-3 feet. The thick, fleshy leaves have gently curving margins and, while usually smooth, may possess small spines along the leaf tips and edges, setting it apart from some more fiercely spiky agave varieties. After several years, typically 15-30, it flowers only once, sending up a tall, densely branched flower stalk that can reach 10-12 feet in height, adorned with yellow, funnel-shaped blossoms. The mature flowering plant dies after the blooms have run their course.