Columnar cacti, the tall, upright kinds such as San Pedro (a Trichocereus), are commonly sold in 3 forms: a rooted plant, a tip cutting and a mid-section cutting. All 3 can come from the same parent plant.
The short version
- A rooted plant already has roots. It skips the rooting stage, so it is the simpler choice for a first cactus.
- A cutting is a piece of stem with no roots. It has to grow them before it grows anything else. Rooting takes 4 to 8 weeks in warm weather.
- Cuttings root well when nights stay at about 60 F or warmer. In cooler weather a cutting can be kept dry and planted later, but it will not root until the warmth returns. A rooted plant is the better buy then.
- A tip cutting keeps its growing point, so it carries on upward as a single column.
- A mid-section cutting has no growing point. It grows new shoots from its side and becomes a branched plant.
- Choose a tip cutting or a rooted plant for 1 clean column. Choose a mid-section for a plant with several stems.
What a cutting is and what a rooted plant is
A cutting is a length of stem cut from a mature plant. It has no roots. Before it is planted, the cut end has to dry until it forms a callus: a dry, firm, sealed surface. If the cut on your cutting is still moist or soft when it arrives, stand it somewhere dry and shaded until the surface is dry and firm to the touch. Then you plant it and it grows roots of its own.
A rooted plant has already grown roots. Cacti are often shipped bare-root, meaning out of the pot with the soil removed, so a rooted plant may arrive with its roots exposed and dry. Cacti tolerate this well. The water stored in the stem sustains the plant while it grows new roots.
What each asks of you in the first months
A rooted plant. Pot it into dry cactus mix, a coarse, fast-draining potting soil. Wait a week before the first watering so any roots damaged in handling can dry. Start it in light shade, such as the dappled shade under a tree, and move it into stronger light gradually. From there, care is the same as for any established cactus: Growing cactus for your conditions covers light, water and cold for your climate.
A cutting. Plant it once the cut end is callused and keep it in light shade. Give it no water until it has rooted. Rooting takes 4 to 8 weeks when nights are at 60 F or warmer, and longer when it is cooler. New growth is the sign that roots have formed. Until you see it, leave the cutting alone. The steps are in How to root a cactus cutting.
Both forms need the same handling on the day the box is opened: After your cactus arrives: the first days.
Tip cuttings
A tip cutting is the top of a stem. It includes the growing point, the spot at the top of the stem where upward growth happens.
Because the growing point is intact, a rooted tip cutting carries on as it did on the parent plant: straight up, as a single column. It has 1 cut end, at the base, and that end goes in the soil.
Mid-section cuttings
A mid-section cutting, often called a mid-cut, is a length taken from lower on the stem. It has a cut at both ends and no growing point, so it does not get taller from the top. New shoots grow from its side, and each one becomes a column of its own. The result is a branched plant with several stems rising from the original piece.
A mid-section is planted the same way up as it grew, with the lower cut in the soil. Many growers report that a piece planted upside down roots poorly or not at all. If you cannot tell which end is the lower one, ask the seller before you plant.
A mid-section can also be laid flat on the mix instead. It roots along the underside and sends shoots up from the top side. Stand it upright if you want the stems close together in a pot. Lay it flat if you have the room and want a row of stems.
A mid-section takes longer than a tip to look like a finished plant. It has to root first and then start its shoots from nothing.
Which to choose for which goal
- Your first cactus. A rooted plant. The rooting stage is already done.
- 1 tall column. A tip cutting, or a rooted plant with its growing point intact. A rooted plant grown from seed also grows as a single column.
- A branched plant with several stems. A mid-section. It gives you several stems from 1 piece.
- Grafting stock. Grafting means joining a piece of one cactus onto the stem of another, called the stock. Many growers use mid-sections for this.
- You are comfortable rooting a cactus. A cutting, in the warm season. Cuttings generally cost less than rooted plants.
When season should decide it
A cutting needs nights at about 60 F or warmer to root well. In cooler conditions rooting is delayed or does not happen. Check your local night temperatures for the next 8 weeks and find your case below.
- Nights at 60 F or warmer for at least the next 8 weeks. Either form does well. In most climates this runs from late spring through summer.
- Nights at 60 F now, but for less than 8 weeks more. Choose a rooted plant. This is the usual position in early autumn, and in spring before the nights have warmed.
- Nights below 60 F. A rooted plant is the better buy. Its roots grow slowly in cool soil, so pot it dry, keep it in bright light and away from frost, and after the first week water only when the mix has been dry for 2 to 4 weeks. A callused cutting bought now can be kept dry and unplanted, in light shade and away from frost, and planted when nights warm up. It will keep for weeks, and often for a few months, but it will not root or grow in that time.
- Indoors. Cuttings can often be rooted indoors at any time of year, provided they get the warmth and light of the growing season.
Season also affects the trip to your door. How a cactus handles shipping, and when to order covers what cold and heat do in transit and how to time an order to your forecast.
Sources
How to Propagate Agaves and Cacti from Cuttings and Seed. Jack Kelly, University of Arizona Cooperative Extension, AZ1483, 2009. https://extension.arizona.edu/sites/default/files/2025-03/How-to-Propagate-Agaves-and-Cacti-From-Cuttings-and-Seed.pdf
How to Transplant a Cactus. Jack J. Kelly, revised by Michael Chamberland, University of Arizona Cooperative Extension, AZ1376, 2020. https://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1376-2020.pdf
Cactus Grafting. University of Florida, Institute of Food and Agricultural Sciences, Department of Environmental Horticulture (a joint project of the University of Florida, University of Kentucky and Texas A&M University). https://propg.ifas.ufl.edu/06-grafting/02-graftingtypes/05-grafting-cactus.html