Grow totem pole cactus in full sun and cactus mix that dries. Totem pole cactus is Pachycereus. Shops also say totem cactus. It is not organ-pipe cactus.
Give it full sun, mix that dries, and a dry winter
| Factor | Recommended | Avoid |
|---|---|---|
| Light | Full sun. A south or west window indoors | Do not leave it in a dim room that stretches the column |
| Mix | Cactus mix with grit or coarse sand | Do not use peat that stays wet around the roots |
| Water | Soak in spring through fall when the mix is dry | Do not water on a winter calendar. The stem can split if the mix stays wet |
| Winter | Cool and almost dry, about 45 to 55 F | Do not keep a warm, wet pot all winter |
| Drought | Dry spells once the mix drains | Do not keep the mix wet because the tag says drought-tolerant |
totem pole cactus is a knobby, nearly spineless column. Give it full sun and mix that dries. Water when the mix is dry in the growing season. In winter, keep it cool and almost dry. [1] [2] Mexican fence post cactus wants that same dry mix. The ribs carry spines, but the watering is the same.
- Site it in full sun. A south or west window is the indoor default. A dim room stretches the column and washes out the green color.
- Use cactus mix with grit. Ordinary potting soil holds water against the roots.
- Soak until water runs out, then wait until the mix is dry. Empty the saucer. Skip extra water in cool, low light.
- In winter, keep the pot cool and almost dry. That rest is what keeps the stem firm — not a warm, wet sill.
How much sun does totem pole cactus need?
Give it full sun. A south or west window is the indoor default. A dim room stretches the column.
How often do I water it?
In spring through fall, soak when the mix is dry, then empty the saucer. In winter, keep it almost dry.
Plant it dry in draining ground, or a pot you can bring in
Where frost stays off, plant it in a sunny bed that drains. In most of the US, grow it in a terracotta pot with a hole so you can bring it in before a freeze. [3]
- Wear gloves, or wrap the stem in several layers of newspaper, before you lift it. Fence-post stems have spines along the ribs.
- Plant into dry ground. Dig a hole as deep as the root ball and a little wider. Set the stem at the same depth it grew in the nursery pot. Do not bury the green tissue.
- If the native soil holds water, mound the bed or backfill with cactus mix so the roots can dry.
- If the plant came from a shaded greenhouse, shade it for about two weeks before it takes full sun, so the skin does not scorch.
- Wait about a week after you plant or pot it before the first soak, so broken roots can dry. Then soak once, and wait until the mix is dry again.
- Bring a pot in before a freeze. If a brief cold night is coming and the plant is in the ground, slip paper bags over the growing tips.
Can I plant it in the ground?
Yes, in a sunny bed that dries, if frost stays off. Otherwise use a pot with a hole and bring it in before a freeze.
Cut a stem and let the wound dry before you set it
You do not prune this cactus to reshape it. A nursery plant is the usual start. If you want a second plant, or a row of fence posts, cut a stem in warm weather and let the wound dry so it does not rot in the mix. [4]
- Wear gloves. Cut a firm stem in late spring or summer, when the plant is growing.
- Set the cutting upright in a dry, shaded spot until the wound skins over. That can take a week or more on a thick column.
- Set it upright in cactus mix that drains, and bury only enough of the base to hold it. Do not water for about a week.
- Then soak once, and wait until the mix is dry. Keep it in bright light until you feel resistance on a gentle tug, then move it into full sun.
- For a living hedge of Mexican fence post cactus, set callused stems in a line in draining ground, and stake them until roots hold.
How do I start a cutting?
Cut a stem in warm weather, let the wound dry until it skins over, then set it in cactus mix. Skip water for about a week.
Not organ-pipe cactus — fence post or totem pole
Organ-pipe cactus on a tag is often Stenocereus thurberi, a clump with many ribs. Mexican fence post cactus is the plant we hold for a living hedge: five to seven ribs and spines along those ribs. Confirm the Latin. totem pole cactus is the knobby, nearly spineless column — a monstrose form of senita, not the whiskered senita sold under that name.
Night-blooming cereus is a different cactus with flattened stems. See How to Grow Dragon Fruit if that is the plant you have. A saguaro has a thick trunk and later arms. Barrel cactus is a globe, not a column — see How to Grow Barrel Cactus only if that is the plant in the pot.
Is this organ-pipe cactus?
Usually not. Organ-pipe cactus is Stenocereus thurberi. Mexican fence post cactus has five to seven ribs and is the hedge plant. Totem pole cactus is knobby and nearly spineless.
When the mix is dry and the stem looks plump, soak once. If frost is coming, bring the pot in.
FAQ
Do I fertilize totem pole cactus?
You do not have to. If you feed, use a weak cactus fertilizer in spring and summer only. Skip winter.
What is the white fluff near the spines?
That can be mealybug. Wipe it off when you see it. Wet, still air makes pests worse. Do not start with a spray.
Can I grow it from seed?
Totem pole cactus is sterile, so a nursery plant or a stem cutting is the usual start. Fence-post seed is slow.
Are the fruits edible?
Mexican fence post cactus can make yellow to red fruit. Eat it fresh if you want. Totem pole cactus rarely flowers, and those flowers are sterile.
Is it safe around pets?
Fence-post spines prick. Totem pole cactus is nearly spineless, but keep pets from chewing the stems.
Is senita the same plant?
Senita is the typical, whiskered form of the same species. Totem pole cactus is the knobby, nearly spineless mutation. Give both full sun and mix that dries.
Recommended plants
References
- [1] Arizona-Sonora Desert Museum -
https://desertmuseum.org/visit/sheets/Pacschmon.pdf - [2] Clemson Cooperative Extension HGIC -
https://hgic.clemson.edu/factsheet/indoor-cacti/ - [3] University of Arizona Cooperative Extension -
https://www.extension.arizona.edu/publication/how-transplant-cactus - [4] University of Arizona Campus Arboretum -
https://arboretum.arizona.edu/photo-walk-around-world-north-american-southwest
More first-season notes by plant are gathered in How to Grow Guides.
Updated: Reviewed by Bosquelle Editors