PXL_20251120_151246456.PORTRAIT.ORIGINAL.jpg
PXL_20251120_151246456.PORTRAIT.ORIGINAL.jpg

Mammillaria spinosissima var. rubrispina

$15.00

A Pillar of Fiery Color

The Mammillaria spinosissima var. rubrispina is the most coveted and visually striking form of the Spiny Pincushion Cactus. It is famous for its dense, cylindrical shape and its incredibly vibrant, fiery red spination, earning it the affectionate common name, Red-Headed Irishman.

  • Vivid Red Spines: The defining feature of the rubrispina (meaning 'red-spined') variety is its spines, which are a brilliant, intense ruby-red to dark crimson. These dense, rigid spines completely cover the dark green body, creating a striking, uniform, and colorful texture.

  • Architectural Column: This cactus grows as a solitary, upright column, remaining relatively slim and manageable in containers. As it matures, it can reach impressive heights, providing a strong, vertical accent in any collection.

  • The Floral Crown: In the spring and early summer, this cactus rewards patient owners with a beautiful ring of deep pink to carmine flowers that form a continuous halo around the apex of the stem, contrasting dramatically with the red spination.

  • Low-Maintenance Star: Despite its dramatic coloring, the Red-Headed Irishman is robust and easy to care for, thriving on the bright light and minimal watering typical of most Mammillaria species.

    All potted plants are local pickup only. Shipped plants will be bare root (no pot or soil).

A Pillar of Fiery Color

The Mammillaria spinosissima var. rubrispina is the most coveted and visually striking form of the Spiny Pincushion Cactus. It is famous for its dense, cylindrical shape and its incredibly vibrant, fiery red spination, earning it the affectionate common name, Red-Headed Irishman.

  • Vivid Red Spines: The defining feature of the rubrispina (meaning 'red-spined') variety is its spines, which are a brilliant, intense ruby-red to dark crimson. These dense, rigid spines completely cover the dark green body, creating a striking, uniform, and colorful texture.

  • Architectural Column: This cactus grows as a solitary, upright column, remaining relatively slim and manageable in containers. As it matures, it can reach impressive heights, providing a strong, vertical accent in any collection.

  • The Floral Crown: In the spring and early summer, this cactus rewards patient owners with a beautiful ring of deep pink to carmine flowers that form a continuous halo around the apex of the stem, contrasting dramatically with the red spination.

  • Low-Maintenance Star: Despite its dramatic coloring, the Red-Headed Irishman is robust and easy to care for, thriving on the bright light and minimal watering typical of most Mammillaria species.

    All potted plants are local pickup only. Shipped plants will be bare root (no pot or soil).

Mammillaria spinosissima Var. rubrispina

Care and Placement

  • Light Needs: Requires Full Sun to bright, intense light. Direct sunlight is essential for encouraging the deepest, richest ruby-red spine color.

  • Water Needs: Very Low. Water deeply only when the soil has dried out completely. Reduce watering significantly during the cool, dormant winter months.

  • Soil Needs: Plant in a highly porous, fast-draining cactus and succulent mix to ensure excellent root health.

Add a stunning, colorful focal point to your sunny windowsill or rock garden with the magnificent Red-Headed Irishman!


At-Home Care

Every purchase comes bundled with a free subscription to Greg, the award-winning plant care app and community.

You'll receive plant care reminders, plant health tips, and help from a community of other customers that will ensure you become a pro plant parent in no time.