Black Spined Agave

The botanical name for black spined agave is Agave macroacantha. Macro means large, and acantha means spines.

The long and sharp black spines that this agave is known for contrast nicely with its soft blue to silvery green leaves. They grow in a clean, geometric pattern, which gives them an elegant and stately appearance.

Botanical name: Agave macroacantha

Other names: Agave besseriana, black spine agave, maguey espadita

TABLE OF CONTENTS

Black spined agave is a compact agave that grows to 2 feet tall and 2-3 feet wide. It tends to spread by growing clumps which typically reach 5 feet wide.

Light colored blue to silvery leaves that are narrow and long. They widen slightly near the end of the leaves, then taper to sharp spines that are black, hence the nickname. These leaves grow from the center in a tight rosette pattern.

Toward the end of its life, the mother plant grows a 6 foot tall inflorescence with numerous green flowers that will eventually form their own agave plants.

Great candidate for rock gardens due to its small overall size and root size.

Provide shade from intense afternoon sun in the Coachella Valley.

One inch long very sharp terminal spines. Handle with caution and keep away from areas with high foot traffic.

Tolerates frost, heat, and drought. Can tolerate temperatures down to the low 20s for a short period of time.

Black spined agave is from warm and dry areas of central Mexico.

Soil: Loose, well-draining soil that is lightly fertile.

Temperature: Can withstand temperatures down to 25 degrees for a short period of time.

Water: Apply occasional, deep watering. Allow the soil to dry out completely between waterings. Use a moisture meter or stick your finger through the soil to gauge the moisture level. It’s better to err on the side of underwatering than overwatering.

Sun: Full sun. Partial shade is best in the Palm Springs region.

Pests: Black spined agave has minimal pests. Fungal diseases from root rot, dry rot, and harsh weather conditions.

Signs of overwatering: Drooping, squishy texture (especially an the bottom of the agave)

Signs of too little water: Shriveling, drying skin

Signs of too much sun: Burning, scarring, fading color

Signs of too little sun: Etiolation, discoloring.

The easiest way to propagate black spined agave is by removing its offsets.

How much does Black Spined Agave cost?

At our nursery, black spined agave costs $15 for a 1-gallon container, $45 for a 5-gallon container, $105 for a 15-gallon container, and $225 for a 24 inch box.

Prices are subject to change. Please contact us for the most up-to-date information on pricing. We may have larger sizes available. We provide installation services locally at a separate cost.

Can black spined agave be grown in cold climates?

Black spined agave is one of the fewer frost-tolerant agaves. It can tolerate temperatures down to the low 20s Fahrenheit for a brief period.

Does Black Spined Agave grow offsets?

Yes, which is great for propagating and sharing.