Argostemma sp. Sea Urchin

A Spiny Silhouette from the Emerald Abyss

Step into the surreal landscape of the tropical understory with the Argostemma sp. Sea Urchin, a botanical curiosity so unique it appears more like a creature of the reef than a resident of the rainforest. This extraordinary "jewel plant" is a masterpiece of specialized evolution, featuring a dramatic, starburst arrangement of narrow, obsidian-green leaves that radiate from a central point. Each leaf is a sharp, architectural needle, together creating a dense, spiky mound that perfectly earns its "Sea Urchin" moniker. With its deep, moody pigments and radical geometric form, it is the ultimate centerpiece for the collector who prizes the strange, the sculptural, and the avant-garde.

Beyond its alien appearance, the Argostemma sea urchin is a rare gem of the Indochinese forest floor, bringing an unparalleled sense of prehistoric wonder to any glass enclosure or high-humidity cabinet. Its petite, explosive growth habit and dark, light-absorbing foliage provide a striking focal point that thrives in the humid, still air of a dedicated terrarium. For the discerning enthusiast seeking a plant that challenges the traditional definition of foliage, this variety offers an exclusive opportunity to own a living work of biological art. Invite the Argostemma sea urchin into your sanctuary and let its sharp silhouette and dark elegance redefine the boundaries of your collection.

How It Grows

This plant grows low and compact, forming a small rosette close to the ground. It stays small and neat, making it perfect for terrariums, cloches, or small display pots.

The Leaves

The leaves are long, narrow, and pointed, arranged in a circular pattern that looks like a sea urchin or starburst. They are usually deep green with a smooth surface, giving the plant a clean and exotic appearance.

Light Needs

Argostemma sp. prefers low to medium indirect light.

• Too much light can stress or burn the leaves

• Low, soft light keeps the shape compact and healthy

Water & Humidity

This plant needs high humidity and even moisture.

• Keep the growing medium slightly damp, not dry

• Never let the plant dry out completely

Humidity above 80% is strongly recommended.

Growing Environment

Best grown in a closed or semi-closed terrarium.

• Loves stable temperature and moisture

• Gentle airflow helps prevent mold

Care Level

This is a high-care plant.

• Recommended for collectors or experienced growers

• Very sensitive to dry air

Handling Note

The leaves and stem are very delicate. Avoid touching or moving the plant once placed. Let it grow undisturbed in a protected environment.