How to Repot a Lithops
Repot Lithops every 4 to 5 years into a deep pot that's 1 to 2 inches wider than the current pot. Use a very gritty, fast-draining mix with at least half pumice or perlite. Wait about two weeks before the first watering so the long taproot can callus.
How to Know It's Time to Repot
Lithops are incredibly slow-growing and live for decades in the same small pot, so the signs of a true outgrown pot are extremely subtle. Watch for these signals over several seasons before deciding to repot.
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1Two-plus seasons have passed since the last repot, with a full leaf-pair turnover each spring.
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2The cluster has divided into so many heads that they push against the pot walls.
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3The taproot is pushing the plant up out of the soil or out through the drainage hole.
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4The soil has compacted into a brick that water runs straight off.
Lithops are happiest left alone in the same pot for years, so don't repot unless you see clear signs the pot has truly been outgrown. Most Lithops only need a fresh pot every 4 to 5 years, and many go longer.
The Best Time of Year to Repot
Lithops grow in cool seasons and rest in the heat of summer, with a leaf-pair turnover each spring. Late spring, right after the old leaves have fully dried up and the fresh pair is plump, is the safest window.
Avoid repotting during the hot summer rest, which is when these plants are most vulnerable to rot. Use the map below to find your window.
How to Choose a Pot and Soil Mix
Pot Size
Move up to a pot that's 1 to 2 inches wider than the current pot, and pick one that's deeper than it looks like it should be. Lithops have surprisingly long taproots that need vertical room, even though the plant itself is tiny. Too much extra width holds wet soil around the roots and rots them.
Pot Material
Terracotta is the best choice for Lithops. The breathable walls dry the soil evenly between waterings, which matches what these extremely rot-prone roots want.
Glazed ceramic and plastic work too, but you'll need to water even less often to keep up with the slower drying. Whichever material you pick, make sure the pot has drainage holes. Lithops rot at the first hint of standing water.
Soil Mix
Mix one part standard potting soil with two parts coarse pumice or perlite for the extra-gritty blend Lithops need. A pre-mixed cactus soil amended with another half-portion of pumice also works. The mix should look mostly mineral, with just enough soil to hold it together.
Skip moisture-control formulas and any peat-heavy mix entirely. Both hold far too much water for a Lithops root system.
How to Repot a Lithops, Step by Step
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1Let the soil dry out completely. Stop watering at least two weeks before you plan to repot, ideally a month. Bone-dry soil falls away from the long taproot cleanly and gives the cuts the best chance to callus.
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2Pick the new pot. Choose a deep pot that's 1 to 2 inches wider than the current pot, with drainage holes. Layer an inch of fresh gritty mix in the bottom so the top of the plant will sit just below the rim of the new pot.
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3Tip the plant out. Gently tip the pot on its side and slide the plant out, supporting the body of the plant with your fingers. If it's stuck, run a thin knife around the inside edge of the pot to release it.
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4Inspect the taproot. Gently brush the old soil off the long taproot so you can see it clearly. Trim any black, mushy, or rotted sections with a clean blade. Healthy Lithops roots are firm, thin, and pale tan.
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5Set the taproot deep. Position the plant so the taproot runs straight down and the body sits with its top right at the soil line. Don't bury the plant deeper than it grew before, or it will rot at the neck. Fill in around the sides with fresh gritty mix and press gently.
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6Wait two weeks, then water lightly. Do not water immediately. Let the cuts callus over in dry soil for a full two weeks, then give the plant a small drink. Watering wet wounds is the most common way Lithops are killed after a repot.
What to Expect After Repotting
Weeks 1 to 4
Lithops show almost no visible change in the first month after a repot, which is exactly right. The plant is quietly rebuilding its root system underground.
Keep the soil completely dry for the first two weeks, then start with a single light watering. Give the plant bright sun, ideally a few hours of direct light, and absolutely no fertilizer.
Months 2 to 6
The first clear signal of a successful repot is the next leaf-pair forming inside the old one in spring. With Lithops, that may not happen until the next growing season, which is normal.
Continue watering only when the leaves start to look slightly wrinkled, never on a schedule. Hold off on any fertilizer until the next active season, since Lithops need almost none and burn easily on fresh roots.
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