Thumb Cactus
Also known as
mammilaria matudae, pokey plant, spikey plant, dont know, doesnt have one and N/A
Taxonomy
Mammillaria matudae
Mammillaria
Cactaceae
Caryophyllales
How to care for Thumb Cactus
How often to water your Thumb Cactus
every 12
Thumb Cactus needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
12
Finding light for Thumb Cactus in your home
a window
Thumb Cactus love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Thumb Cactus does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Thumb Cactus in your home 🏡.
How to fertilize Thumb Cactus
Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Thumb Cactus after it doubles in size or once a year—whichever comes first.
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What kind of soil is best used for a cactus plant? #Mammillaria
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My cactus looks like an old pumpkin from last Halloween: deflated and sad. What should I do? #Mammillaria
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The base of this baby cactus I got last weekend is brownish. I just don’t want it to get worse or take over the plant. Does anyone know what might be wrong or have any suggestions? #Mammillaria
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How big does it get? #Mammillaria does this cactus grow big?
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They're leaning!:( Is this a problem? I've noticed that the largest growth is leaning a bit more than it was before. I usually have the cactus outside all day with direct sun, but I had to drive cross country and they were stuck in the car for 4 days with only a few hours of sun:( I now have them sitting in a window sill. Is the leaning normal? Or should I be concerned? (First picture is when I first got them, second picture was taken today.) #CactusClique #ThumbCactus
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What is wrong with my thumb cactus? See original photo of it. Looked fine last time I watered it but it seems like it is shrivelling up. Does it have bugs? #
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The flowers are not popping up anymore… is that normal? #Mammillaria
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My little cactus has roots growing out of the nursery pot what do I do #Mammillaria
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Can I repot a spiny pincushion while it's blooming? #Mammillaria Not pictured but my spiny pincushion has been slowly blooming over the past month and its flowers are just now opening up. Its roots have been trying to escape through the bottom of the plastic pot it's in for awhile and I'd really like to give it more space and a better pot than the one it came in. Will I do much harm to the plant if I repot it now? Should I wait until it's completed it's bloom cycle? Im just worried that waiting out such a slow cycle may be risking issues - it really wants more space to grow! Thanks in advance!
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One of my babies decided to rot completly and just die. Well, woke up, looked at my babies and saw that Sigmund was about to collapse from rot. I mean... this plant. Everything is fine, then one day he thinks: well, it's a nice day to die. Bye. ☠ 😂 I was able to grab two babies from Sigmund, put some cinnamon on roots and I'm going to let it callus. Do you think they have a chance? 🥺 #happyplants #plantsmakepeoplehappy #byebye #plantaddict #propagationstation #plantgraveyard #greggang #mammillaria
Care Summary for Thumb Cactus
Thumb Cactus
Greg recommends:
Water
0.5 cups every 12 days
Placement
< 1ft from a window
Nutrients
Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
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