{"product_id":"mammillaria-spinosissima-seeds","title":"Red-Headed Irishman \"Spiny Pincushion Cactus\" (Mammillaria spinosissima) Seeds – Rusty Red Spines, Magenta Flowers, Fast-Growing","description":"\u003cp dir=\"ltr\" class=\"mt-3 -mb-1 text-[1.375rem] font-bold\"\u003e\u003cstrong\u003eMinimum:\u003c\/strong\u003e \u003cem\u003e10+ Seeds\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"mt-3 -mb-1 text-[1.375rem] font-bold\"\u003eRed-Headed Irishman Seeds (Mammillaria spinosissima) — The Spiny Pincushion With a Fiery Crown\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eRed-Headed Irishman is one of the most beautiful Mammillarias in cultivation: this cylindrical cactus wears a dense, fiery halo of reddish-orange to rusty red spines catching light against dark green to blue-green stems below. Native to the highlands of Guerrero and Morelos in central Mexico, growing at elevations of 1,600-1,900 meters, this species has been cultivated since at least 1835 and remains a collector favorite. Unlike many slow-growing cacti, Red-Headed Irishman is genuinely fast-growing, rewarding beginners and collectors with visible progress season to season. The plant starts globular and gradually elongates into an upright column, forming clumps of multiple columns, reaching up to 20 inches tall and 3 inches diameter in ideal conditions. The showstopper arrives late winter through spring: a startling crown of vivid magenta-pink flowers encircles the top, creating brilliant contrast against reddish-orange spination. Bright red fruits often follow in fall, favorites of small native birds. Easy-care and drought-tolerant.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWho Grows Red-Headed Irishman Seeds?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eCactus collectors seeking dramatic color contrast. Beginners wanting a fast-growing, forgiving species. Anyone drawn to fiery spination against magenta blooms. Container gardeners wanting visible progress. Rock garden designers seeking columnar texture.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWhat This Fast-Growing Mexican Pincushion Cactus Actually Is\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cem\u003eMammillaria spinosissima\u003c\/em\u003e, Red-Headed Irishman, Spiny Pincushion Cactus. Endemic to Guerrero and Morelos, central Mexico, elevations 1,600-1,900 meters. Solitary to clustering, cylindrical cactus, dark green to blue-green stems, angular tubercles densely covered with white to reddish-orange spines nearly obscuring the stem. Fast growth, globular initially then elongating into columns up to 20 inches tall and 3 inches diameter in native habitat, more modest in cultivation. Flowers vivid magenta-pink, encircling the crown, blooming late winter through spring. Fruits bright red in fall. Winter-dormant. USDA Zones 8-11, frost-tender below approximately 23°F.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eIn the Garden \u0026amp; Collection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\" dir=\"ltr\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFiery Spination:\u003c\/strong\u003e Dense reddish-orange spines create genuine visual heat.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMagenta Flower Crown:\u003c\/strong\u003e Vivid blooms ring the top in season.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFast Growth:\u003c\/strong\u003e Visible progress season to season, unusual for pincushions.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFall Fruit Display:\u003c\/strong\u003e Bright red fruits attract small native birds.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eClustering Habit:\u003c\/strong\u003e Forms multi-column clumps over time.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eBeginner-Friendly:\u003c\/strong\u003e Easy care, forgiving, low-maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eGrowing Red-Headed Irishman Seeds\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eStart:\u003c\/strong\u003e Indoors in warm, bright conditions.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGermination:\u003c\/strong\u003e Surface-sow on fast-draining cactus mix.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTemperature:\u003c\/strong\u003e 70-80°F optimal.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eLight:\u003c\/strong\u003e Bright indirect initially, full sun once established.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eZones:\u003c\/strong\u003e USDA 8-11. Frost-tender below 23°F.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSoil:\u003c\/strong\u003e Porous cactus mix, 70-80% mineral grit.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSunlight:\u003c\/strong\u003e Full sun to bright light with airflow.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eWater:\u003c\/strong\u003e Consistent but not excessive in summer; dry in winter.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eHandling:\u003c\/strong\u003e Wear gloves... spines dense and sharp.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSpacing:\u003c\/strong\u003e Allow room for clustering columns.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFlowering:\u003c\/strong\u003e Late winter through spring, magenta ring at crown.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFruit:\u003c\/strong\u003e Bright red fruits follow flowering, typically fall.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGrowth Rate:\u003c\/strong\u003e Fast for the genus... expect noticeable seasonal growth.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eBefore You Close This Page\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eRed-Headed Irishman, spiny pincushion cactus native to Guerrero and Morelos, Mexico. Dense reddish-orange to rusty red spines. Vivid magenta flower crown, late winter through spring. Bright red fall fruit attracts birds. Fast-growing, up to 20 inches tall. USDA Zones 8-11, frost-tender. Full sun, porous gritty soil. Easy care, beginner-friendly. The fiery-headed cactus with a crown of jewels.\u003c\/p\u003e","brand":"terramatergardens","offers":[{"title":"Default Title","offer_id":54136908579134,"sku":"11542","price":3.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0705\/8836\/7166\/files\/candles-5656.png?v=1787196202","url":"https:\/\/www.terramatergardens.com\/products\/mammillaria-spinosissima-seeds","provider":"Terra Mater Gardens","version":"1.0","type":"link"}