Mammillaria spinosissima
Mammillaria spinosissima
Mammillaria spinosissima
Mammillaria spinosissima
Mammillaria spinosissima
Mammillaria spinosissima

Mammillaria spinosissima Red Headed Irishman

(This plant comes in a 3.5-inch pot. All our plants are grown under the same conditions, although not all the plants are the same. You will receive a similar plant in size and shape to the ones in the pictures. Our plants are hand-picked and carefully selected to bring you the best quality possible. Please allow us up to 3 business days to process your order. If you wish to receive your order on a specific date, or have special instructions, please add a note at the checkout. The plant is shipped in its pot to prevent any damage to the roots.)

Mammillaria spinosissima is a fast-growing cactus originating from Mexico. Commonly known as Spiny Pincushion Cactus or Red Headed Irishman, this cylindrical plant is quite easy to cultivate. The winter-dormant plant belongs to the Cactaceae family and grows up to 12 inches in height. The purple-colored flowers of these cacti look truly exceptional. 

Growth rate

The Spiny pincushion cactus has a fast growth rate. The plant is not very demanding.


You get to enjoy seeing purple-yellow blooms from early to mid-summer. The cactus is certainly a must-have in your cactus collection.


Summertime irrigation should be consistent but not excessive. In winter, maintain dryness with plenty of airflow. Low air humidity during the dormancy period is recommended. 


This species prefers regular cactus mix soil that is quite porous and contains minimal organic materials.


The Red Headed Irishman cactus is hardy in zones 8 to 11. It is frost-resistant and cannot survive in temperatures less than 23° F (-5° C).


This Mammillaria species prefers bright, direct sunshine but needs partial shade as well. If left in the sun's direct rays for too long, susceptible to sunburn.


The propagation of these cacti can be done by seeds or cuttings.

The Mammillaria spinosissima red headed Irishman grows best indoors, though pots can be transferred to a sunny, protected patio in the middle of the summer. Check this one on Planet Desert!

Some of the information in this description has been found at, and

Blooming Season Early-mid summer
Common Name Spiny pin cushion
Dormancy Winter
Family Cactaceae
Flower Purple yellow
Frost Tolerance 13 °c
Growth Rate Fast
Hardiness Zone 8 to 11
Height 12 in
Origin Mexico
Pot Size 3.5"
Scientific Name Mammillaria spinosissima
Shape Cylindrical
Sun Exposure Full sun

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Zack W.
United States United States


It looks great!!

Planet Desert Mammillaria spinosissima ReviewPlanet Desert Mammillaria spinosissima Review
Troy M.
United States United States

Love it!

Nice size and quality plant. One of my favorites

Rachelle S.
United States United States

What a cute little cactus

This cactus is so cute, hes healthy and has beautiful, i cant wait to watch him grow.

Planet Desert Mammillaria spinosissima Review
Kanjana T.
United States United States

too small and shipping is over price.

Lai H.
United States United States

Love my cactuses

All cactuses was healthy and packaging was excellent. Owner was nice on the phone. Thank you for the extra little rocks, will buy more next time.

Planet Desert Mammillaria spinosissima Review

Mammillaria spinosissima

6 reviews
Regular price$ 7.50
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Colder regions warning: If you are expecting temperatures below 40 degrees within the next five days after placing your order, we highly recommend adding a heat pack to your order. We are now offering 72-hour heat packs by request, and if your order is $50.00 or more, you will get a heat pack free of charge by request. To prevent plants from freezing while in transit, orders placed for areas with extreme severe freezing temperatures will be held for shipment until it is safe to ship. Care instructions are included in every package you order. We ship via USPS Priority Mail, and we calculate the shipping cost based on the weight and volume of your purchase. Depending on your location, we will ship the plants on a certain day to avoid transit time during weekends or holidays. If you have any questions or comments, please feel free to contact us at any time.

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