Mexican Fence Post Cactus
5.0 out of 5 (6 experiences)
Survivor
Fast grower
Also known as
Pachycereus marginatus
Taxonomy
Lophocereus marginatus
Lophocereus
Cactaceae
Caryophyllales
How to care for Mexican Fence Post Cactus
How often to water your Mexican Fence Post Cactus
every 12
Mexican Fence Post 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 Mexican Fence Post Cactus in your home
a window
Mexican Fence Post Cactus love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Mexican Fence Post Cactus does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Mexican Fence Post Cactus in your home 🏡.
How to fertilize Mexican Fence Post 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 Mexican Fence Post Cactus after it doubles in size or once a year—whichever comes first.
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Retry here has a black growth. Can anyone identify it for me?
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This is classified as sea lettuce, but I don’t think that’s the proper classification for this type of cactus. Does anyone have an idea what this is? I can’t identify it through the app.  #GreenLaver
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Small bugs Any idea what these small bugs are? They can fly and seem to just be only at the top of the cactus. Neem oil doesn’t seem to bother them. #TotemPoleCactus
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Black tip… Any ideas why the top of my totem pole cactus has turned black? 🙈
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Bumpy spots on cactus I noticed some strange bumpy spots on this cactus. It’s a large potted hedge cactus I’ve had for years and this is happening on one of the smaller arms. I’ve never had this issue before but now it’s happening on two areas near each other. Any help is appreciated! #SucculentSquad
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Please help us determine the issue regarding Walt our Mexican fence post. #HappyPlants
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Help me diagnose this issue with our Mexican fence post
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Is this a happy cactus? Baby stem is getting big. Do I just leave them be? Help!
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What’s going on with him :( He’s starting to rot at the top
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Hey guys! What species is Calvin? #CactusClique
Care Summary for Mexican Fence Post Cactus
Mexican Fence Post 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.
What other plant parents say
Survivor 3
Fast grower 2
Blooms easily 1
12/24/2021
Just love the looks of these when the get really tall and grow flowers. They need to be about 10 years old to flower so this one has a lot of growing to do first.
10/16/2021
Just love watching this guy get taller and wider!
Survivor
Fast grower
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