Graptopetalum paraguayense: the pink cast, and the leaf that plants itself
Ghost plant is the most reliable leaf-propagator in the collection — a dropped leaf becomes a rosette without any intervention. What people ask about instead is the colour, which is a winter phenomenon with a clear explanation.
Where the pink comes from
G. paraguayense makes a dense farina layer over grey-green tissue, and the pink-to-violet cast appears when the plant is cold and dry but still receiving strong light. Peak colour in a northern-hemisphere collection is January to March, at night temperatures of 4–8 °C and daytime light of 25,000 lux or more.
A plant kept at 15 °C all winter stays grey. A plant moved to a dark garage to get cold goes grey and stretches. The pairing is not optional: the pigment is a photoprotective response, so it needs the light to be worth producing.
Why this leaf propagates when others will not
Dropped leaves of G. paraguayense root at the petiole scar within 12–18 days at 22 °C without any hormone, and produce a visible rosette by day 35. The reason is a high concentration of stored starch in the leaf base plus a very thin cuticle at the abscission zone, which lets root primordia emerge easily.
The practical consequence: do not clean up fallen leaves. Lay them flat on dry mix at the edge of the pot and leave them. Watering the mother plant eventually reaches them. Pups stay attached to the dried leaf for four to six months, so do not remove the shrivelled leaf — it is the seedling's entire food supply.
Trailing stems and how to keep the plant upright
Each rosette sits on a stem that lengthens and eventually lies down under its own weight. Once a stem exceeds about 15 cm without support, it will flop and the rosette turns upward again — the classic bent-neck look. The plant is not ailing; it is behaving normally.
If you want the tidy stacked look, cut back to 3 cm above the soil in late March and let two or three new stems develop. If you want the trailing look, put it in a 25 cm tall pot or a hanging basket and let the stems hang past the rim. Both are correct; the mistake is doing neither and getting a plant that topples off a shelf.
Watering and the 16-day working figure
At 24 °C in a 15 cm pot, the mix reaches the dry point in 14–18 days. Ghost plant has thinner leaves than Echeveria and shows water loss clearly: the whole rosette closes slightly inward and the leaf undersides develop a shallow concave curve.
During the cold, bright window that produces the pink, keep it drier still — 21–25 days — and water in the morning so any splash on the farina has evaporated by night. Water poured over the rosette in a 6 °C room will mark the leaves and can start rot in the crown.
Parameter table
- Latin name
- Graptopetalum paraguayense
- Common name
- Ghost plant
- Rosette form
- open
- Light range
- 25,000–50,000 lux
- Water interval
- 16 days at 24–28 °C
- Rest period
- Slows in midwinter but does not stop; the pink cast is strongest January to March
- Hardiness
- 9a–11 (leaf tips burn near −3 °C)
- Offset behaviour
- Rosettes on a trailing stem; a single leaf dropped on mix produces a whole plant without help
- Soil mix (by volume)
- 2 pumice : 1 akadama : 1 bark fines, by volume
- Mature diameter
- 15 cm
| Month | State | What the plant wants |
|---|---|---|
| January | Rest | Out of action for this genus — no water unless the plant visibly shrinks, and no repotting. |
| February | Rest | Out of action for this genus — no water unless the plant visibly shrinks, and no repotting. |
| March | Growth | Repotting window opens for summer growers. Trim roots, refresh the mineral fraction, dry for a week. |
| April | Growth | Growth restarts. First full watering at the rim, then resume the published interval. |
| May | Growth | Peak growth and the offset season. Feed at quarter strength every third watering. |
| June | Growth | Lengthening days, rising heat. Watch the leaf turgor test rather than the calendar. |
| July | Growth | Hottest weeks. Water in the evening, a third of the spring volume, and only on a visible symptom. |
| August | Growth | Heat eases at night. Prepare mix and pots for the autumn repotting window. |
| September | Growth | Autumn window for winter growers. Root-prune and repot while the soil is still warm. |
| October | Growth | Peak autumn growth. This is the season when most colour work should be done. |
| November | Growth | Daylight falls fast. Taper watering by a quarter and stop feeding entirely. |
| December | Rest | Out of action for this genus — no water unless the plant visibly shrinks, and no repotting. |
Tinted rows are the months this genus is genuinely out of action: no repotting, no feeding, and water only if the plant visibly shrinks.
Four things to take away
- Pink needs cold and strong light together: 4–8 °C nights plus 25,000+ lux days.
- Fallen leaves root unaided in 12–18 days; never clean them off the surface.
- Leave the shrivelled parent leaf attached for four to six months.
- In the cold colour window stretch watering to 21–25 days and water in the morning.
Informational only — This page is a cultivation record, not horticultural or plant-pathology advice. Any treatment should follow the product label and local regulation.