Gadenin日本語Get the appTwo phases, not four seasons
This plant does not have a true dormancy. It has an active phase when the room is warm and bright, and a slow phase when it is cooler and the light is weaker. Everything you do should follow which phase the plant is in, judged by the room and by the plant itself, not by a date on a calendar.
The signal for the active phase is new leaves appearing at the growing tips. The signal for the slow phase is that new growth stops for three or four weeks running while the leaves stay firm. Read those two signals and you will get the timing right wherever you live.
| Task | Active phase | Slow phase |
|---|---|---|
| Watering | Two or three times a week, medium fully wetted then drained | About weekly, medium only lightly damp |
| Feeding | Quarter strength balanced feed every third watering | None at all |
| Repotting | Yes, early in the phase if needed | Never |
| Propagation | Yes, best results | Poor, cuttings sit and rot |
| Humidity effort | Grouping is usually enough | Humidifier often needed once heating is on |
| Pest checks | Every two weeks | Weekly, mites peak in dry heated air |
Early in the warm season: the working month
This is when almost all the intervention happens. As the room warms and you see the first new leaves, do everything that involves disturbing the plant, so it has the whole growing period to recover.
Repot if the bark has broken down. Remount if the mount has decayed. Take cuttings. Cut back any stem that has gone bare and leggy over the cool months, cutting just above a node so the plant breaks from there. Then start feeding, very weakly, and step the watering interval up as the room warms.
- Assess the medium first Push a finger into the bark. If it crumbles into fine particles rather than staying as chunks, it has broken down and holds too much water. Repot now, not later.
- Tidy before growth starts Remove any leaf or stem that shriveled during the cool months. Cut back to firm tissue just above a node. Doing this before new growth appears means you are not cutting off the season's new shoots.
- Begin feeding at quarter strength A balanced liquid houseplant feed at a quarter of the label rate, every third watering. This plant lives on very little in the wild and full strength feed burns the fine roots and builds salts in the bark.
- Take cuttings while material is fresh Anything you removed during the tidy-up that has two or more nodes and firm leaves can be rooted. It costs nothing and gives you a spare plant.
Through the warm months: keep up
Once the plant is running, the job is maintenance at a higher tempo. It dries faster, so check the weight of the pot or mount every couple of days rather than once a week. Growth is quick enough that trailing stems will need guiding onto their support every few weeks.
Watch the light as the sun's angle changes. A spot that was safely indirect early in the season can catch an hour of direct afternoon sun at the height of summer, and that hour is enough to bleach the leaves. Check the plant at the hottest part of the day at least once a month and move it back or add a curtain if sun is falling on it.
This is also the phase to raise humidity if you have a genuinely hot dry summer. High heat with dry air shrivels the leaves just as effectively as winter heating does, and people rarely expect it in summer.
As the room cools: back everything off
When new growth stops, change gear deliberately rather than drifting. Stop feeding entirely, because unused fertilizer accumulates around roots that are not taking it up. Stretch the watering interval and reduce the volume so the medium is lightly damp rather than fully charged, and check that nothing has been left standing in a saucer.
Do not repot, do not take cuttings, and do not cut anything back. All three ask the plant to regrow at exactly the time it cannot. Whatever needs doing will still need doing when the warmth returns, and it will succeed then.
The heated months are the dangerous ones
More dischidias are lost in the cool heated part of the year than at any other time, and the cause is almost never cold on its own. It is the combination of a wet root zone that no longer dries quickly and air that has been dried out by central heating.
Deal with the two separately. For the roots, water less and make sure everything drains. For the air, move the plant away from every radiator and vent, group it with other plants, and run a humidifier if a hygrometer beside the plant reads below 40 percent. Keep the room above 55F (13C) at all times, including overnight, and keep the plant off a cold windowsill where the glass chills it after dark.
| Risk in the cool months | Why it happens | How to head it off |
|---|---|---|
| Shriveled new growth | Heating drops humidity below 40 percent | Humidifier or a glass case, move away from vents |
| Sudden collapse at the base | Cool plus wet medium | Reduce watering, empty every saucer, check drainage |
| Spider mite outbreak | Dry warm air is ideal for them | Weekly inspection, raise humidity |
| Cold damage on leaves near glass | Night temperature at the window falls far below room temperature | Move the plant a foot into the room after dark, or permanently |
What to write down
Keep a short running note for each plant: the week new growth started, the week it stopped, the date of the last repot and what medium you used, and the humidity reading whenever you check it. None of this takes more than a minute a month.
The value shows in the second year. You will know that your plant reliably starts growing a fortnight after the heating goes off, that the bark mix you made last time was holding too much water by month eight, and that the shriveling always begins in the same week. That turns care from reaction into anticipation, which is the difference between a plant that limps along and one that fills its mount.