Birthday Cake Cactus
Taxonomy
Mammillaria haageana var. elegans
Mammillaria
Cactaceae
Caryophyllales

How to care for Birthday Cake Cactus
How often to water your Birthday Cake Cactus

every 12
Birthday Cake 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 Birthday Cake Cactus in your home

a window
Birthday Cake Cactus love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Birthday Cake Cactus does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Birthday Cake Cactus in your home 🏡.
How to fertilize Birthday Cake 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 Birthday Cake Cactus after it doubles in size or once a year—whichever comes first.
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What should I give my plant to get better? #Mammillaria
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How many times a week do you have to water this plant #Mammillaria
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Is Captain Jack Harkness getting ready to bloom? #Mammillaria
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My cactus doesn’t look as good as when I got it what is wrong with it? #Mammillaria
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I just bought Sunny and was wondering, how soon I should put her in a new pot? #Mammillaria
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Do i seperate and repot? do i size up? does it need support #mamillaria
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What kind of dirt or soil should I use to repot this plant? #Mammillaria
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Hello, I’m new here and this is a new plant for me, I was wondering if maybe someone could tell me if this plant is sick or if this is normal. #Mammillaria
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I have two of these, these little pink buds have started to grow off of this one, but nothings been growing on my other one. Is that normal? #Mammillaria
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What type of water should I use warm or hot and how much #Mammillaria
Care Summary for Birthday Cake Cactus
Birthday Cake Cactus
Greg recommends:

0.5 cups every 12 days

< 1ft from a window

Repot after 2x growth
Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.
