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A haworthia grows in the mild parts of the year and stops in the extremes. Spring and autumn are when it puts out new leaves, makes roots and produces offsets. High summer is a rest, and winter is a slow tick-over in a warm room or a near-stop in a cool one. Every practical decision follows from knowing which of those four states the plant is in today.
Because the plant is indoors, the trigger is temperature rather than the calendar, and the transitions are worth watching for rather than scheduling. Sustained days above 86F (30C) push it into the summer rest; a return to nights below about 68F (20C) in early autumn wakes it up again.
| Season | Plant state | Water | Feed | Main jobs |
|---|---|---|---|---|
| Spring | Growing strongly | Every 7 to 10 days when dry through | Half strength, once | Repot, divide offsets, move toward the light |
| Early summer | Slowing as heat builds | Stretch the interval out | Stop | Add shade, improve air movement |
| High summer | Resting | Lightly every 3 to 4 weeks | None | Leave it alone. Watch for rot and mealybug |
| Autumn | Growing strongly, best season | Every 7 to 10 days when dry through | Half strength, once | Repot, take offsets and leaf cuttings, return to bright light |
| Winter | Slow or near dormant | Every 2 to 4 weeks depending on room temperature | None | Keep above 41F (5C), water in the morning |
Spring: restart, repot, divide
The signal that spring has started for your plant is a new leaf emerging from the center of the rosette. Until you see it, keep to the winter watering interval however warm the weather feels, because a plant that has not restarted its roots cannot use the water.
Once it is growing, this is the first of the two windows for anything that disturbs the roots. Repot plants that are due, separate offsets, and pot up any leaf cuttings that have made a rosette. Move the plant closer to the window over a fortnight rather than in one step, since leaves that spent winter in weak light scorch easily. Feed once with a balanced liquid feed at half the label strength, and only once.
Summer: do nothing well
The summer job list is deliberately short, and the discipline is in not adding to it. As soon as sustained heat arrives, stretch the watering interval to three or four weeks and give only a small drink each time, in the evening when the pot has cooled. Stop feeding entirely. Do not repot, do not divide, do not take cuttings.
What is worth doing is managing the environment. Add a second layer of shade at a south or west window, or move the pot back into the room. Make sure air moves around the pot rather than sitting still. Check the crown for mealybug every couple of weeks, since the rest period is when infestations build unnoticed while nobody is looking closely at a plant that is not doing anything.
Slight softening of the lowest leaves during the rest is normal and is not a reason to increase watering. The plant is living off its reserves exactly as it is built to.
More haworthias are lost in a single hot week than in the rest of the year combined, and almost always to water given with the best intentions. If you are unsure whether to water during a summer heat spell, do not.
Autumn and winter: the best season, then the quiet one
Autumn is the strongest growing season of the year and the best time for everything structural. Once nights cool, return the plant to the brightest position it will take, resume watering every seven to ten days, and feed once at half strength. This is the ideal window for repotting, for separating offsets, and for taking leaf cuttings, since the new plants get months of moderate weather before winter.
As light levels drop, growth slows and watering must slow with it. In a heated room at 59 to 68F (15 to 20C) the plant keeps growing gently and wants water every two to three weeks. In a cool room below 50F (10C) it is effectively dormant and once a month is plenty. Water in the morning either way, so the compost is not cold and wet overnight.
The hard winter limit is 41F (5C). Below that the leaves are damaged, and a wet plant at that temperature rots at the base. A windowsill behind a closed curtain can be far colder at night than the room it is in, so move the pot into the room in the evening during cold spells.
A year of notes worth keeping
The whole schedule above is a general shape, and your own house will bend it by weeks in either direction. A short record turns it into something specific to you within a single year. Note four dates: the first new leaf in spring, the day you first stretched watering for the summer heat, the day autumn growth restarted, and the day you moved to the winter interval.
Alongside those, keep the dated watering line and the repotting date on the pot label. That is perhaps twenty entries a year, and next season it replaces guesswork with a plan. Most people find their own autumn restart comes earlier than expected, and that shifting the repotting a fortnight forward to match it gives noticeably better establishment.