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Genus · Kalanchoe

Kalanchoe

large paddle leaves, highest light demand here. One file in the collection so far — Kalanchoe thyrsiflora. Dormancy for the whole genus falls in July, August.

Top-down rosette geometry for Kalanchoe thyrsiflora

Paddle plant

Working light range: 35,000–70,000 lux
Form
open
Water
14 d
Zone
9b–11 (damaged below 0 °C)
Mix
2 pumice : 1 akadama : 1 bark fines, by volume
Rest
Winter grower; the red margins peak December to March and fade in summer

Species file

Kalanchoe month by month
MonthStateWhat the plant wants
January Growth Deepest rest. Water only if the lowest leaf ring softens; keep the room as bright as you can.
February Growth Late rest. Daylight is returning — begin adding an hour of supplementary light every two weeks.
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 Rest Out of action for this genus — no water unless the plant visibly shrinks, and no repotting.
August Rest Out of action for this genus — no water unless the plant visibly shrinks, and no repotting.
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 Growth Slow, dry and bright. This is the colour peak for most genera in the collection.

Tinted rows are the months this genus is genuinely out of action: no repotting, no feeding, and water only if the plant visibly shrinks.

Other genera

Echeveria Echeveria
Sedum Sedum
Haworthia Haworthia
Crassula Crassula
Graptopetalum Graptopetalum
Sempervivum Sempervivum
Aeonium Aeonium
Pachyphytum Pachyphytum
Adromischus Adromischus
Senecio Senecio