Chinese Evergreen: what your moisture meter reading means

The healthy band for a Chinese evergreen, on whichever scale your meter prints — and, more usefully, what the same number means in different situations.

Percent (0–100)

30–60%

what the four-in-one we recommend prints

Ten-point probe (1–10)

3–6

if your probe prints a bare 1–10 sweep

Analog dial

2–3

Moist to Wet — of 4 zones

That is the band you are aiming for, not a target to hit exactly. These ranges are published horticultural consensus and are deliberately banded wide — these are unpowered galvanic probes, two of them in the same pot routinely disagree, and fertilizer salt raises the reading with no extra water present.

Got the plant in front of you? Point your camera at it — Plant Tender names what is in the pot from one photo and gives you the numbers it wants. No account, no card.

What each reading means for a Chinese evergreen

A Chinese evergreen wants water below 30% and starts staying wetter than it likes above 60%. If your probe prints a bare 1–10 sweep instead of a percentage, that works out like this.

Reading	For this plant	What to do
1	Bone dry	Well past dry. Water thoroughly now — look for leaves losing their stiffness and drooping outward from the stems.
2	Thirsty	Dry enough to water. Water on the next check unless you watered in the last day or two.
3	In the healthy band	Inside the healthy band. Leave it — the useful question is whether this number is falling since last time.
4	In the healthy band	Inside the healthy band. Leave it — the useful question is whether this number is falling since last time.
5	In the healthy band	Inside the healthy band. Leave it — the useful question is whether this number is falling since last time.
6	In the healthy band	Inside the healthy band. Leave it — the useful question is whether this number is falling since last time.
7	Wetter than ideal	Wetter than ideal. Fine a day or two after watering; a concern if it has been a week.
8	Wetter than ideal	Wetter than ideal. Fine a day or two after watering; a concern if it has been a week.
9	Saturated	Saturated. If this has not fallen in several days, check drainage before you change anything else.
10	Saturated	Saturated. If this has not fallen in several days, check drainage before you change anything else.

Every row here is worked out from this plant's own numbers — a Chinese evergreen at 4 and a snake plant at 4 are in genuinely different situations.

The number depends on your soil, and most charts ignore that

A Chinese evergreen is usually in standard peat-based potting mix with some perlite, usually in a plastic nursery pot.

Chinese evergreen is one of the few plants that genuinely looks good in a dim room, and that is exactly what makes it easy to overwater. A plant in low light uses water slowly, so a pot that dried in a week in a bright spot can take two or three weeks in a hallway or an office corner. The mix and the band are ordinary; what changes is how long the reading takes to fall. Watering on a fixed day ignores that, and the meter does not.

Adjusting for your mix

Standard peat mix in a bright spot: the range on this page applies and the pot falls at an ordinary pace. The same mix in low light: expect the reading to fall slowly, and let it reach the bottom of the band before you water, however long that takes. Extra perlite or bark: readings run slightly low and the pot dries faster, which suits a plant kept in a dim room. A pot on a cold floor or against a winter window: the soil stays wet longer, and cold, wet roots are the combination this plant handles worst.

Plant Tender asks which of these your pot is in — dense potting soil, chunky aroid mix, bark / orchid mix, semi-hydro / pon, succulent / cactus grit — and applies the adjustment for you, along with a probe-depth target from your pot size.

Where to put the probe

Mid-depth, a couple of inches in from the pot wall. Chinese evergreens grow as a clump of stems from the base, and the root mass under that clump is dense; pushing the probe into the middle of it gives a jumpy reading and can damage the stems. Between the clump and the wall the soil is even and the probe gives a steady number.

How a Chinese evergreen actually fails

Slow overwatering in a dim spot. Lower leaves turn yellow one after another, the stems soften where they meet the soil, and because the plant is so undemanding the pattern can run for months before anyone connects it to the watering. Cold is the other thing that hurts this plant, and it looks different: dark, wet-looking patches on the leaves after a cold night near glass or a spell in a draft. That damage has nothing to do with the soil, and the meter will usually read normally while it happens.

Common situations

My Chinese evergreen is in a dim corner and still reads 5 after two weeks.

Leave it. In low light that pace is normal: the plant is using water slowly, not failing to use it. Wait until the reading drops below 3, the bottom of the band, which in a dim room may take another week or more, and water then. The time to worry is a pot that has not moved at all in three or four weeks, which points to a drainage problem or a pot far bigger than the roots. A slow fall is fine. No fall is not.

Dark, wet-looking patches appeared on the leaves and it reads 4.

The 4 says the soil is fine, so look at where the plant has been. Dark patches that look water-soaked, appearing over a day or two, are the classic sign of cold damage on a Chinese evergreen: a night pressed against a window in winter, a spot by an outside door, or a ride home from the store on a cold day. Move it somewhere warmer, away from the glass, and do not change the watering to make up for it. The damaged patches will not recover, but new leaves will come in clean.

Several lower leaves are turning yellow and it reads 7.

One old lower leaf yellowing now and then is normal. Several in a row, in a pot that reads 7, is more water than this plant is using: on this page 7 is wetter than ideal. Let the pot dry down into the band before watering again, and water less often from now on, or move the plant somewhere a little brighter so it drinks faster. If the stems feel soft at the soil line, slide it out of the pot and check the roots for brown, mushy sections.

One reading can't be trusted. How fast the pot dries out can.

Everything above is really one argument: a single number from a cheap conductivity probe is not a measurement, it is a data point with a large error bar. Fertilizer salt raises it. Air gaps in chunky mix lower it. Probe depth moves it several points. Two meters in the same pot disagree.

What survives all of that is the trend. The same meter, in the same spot, in the same pot, read over a few weeks, tells you how fast your Chinese evergreen in this specific mix in this specific room actually dries — and that is the thing that answers "do I water it", which no chart can do for you.

Stop looking it up. Point your camera at your Chinese evergreen.

The bands above are for Chinese evergreen in general. Plant Tender gets there from a photo instead: one shot of what is actually in the pot, and it names the plant and gives you the soil-moisture, soil-temperature and light numbers that plant wants. Your first scan needs no account and no card.

Scan a plant — free, no account

Already know what it is? Save it to Plant Tender and it remembers what your Chinese evergreen read last time, then tells you water or leave-it-be — so you are reading a trend instead of interpreting one number in isolation. Free for your first three plants.

Ranges come from Plant Tender's per-species dataset, which is version-controlled and reviewed in public — Aglaonema commutatum, 30–60% moisture, 61–78°F soil temperature, low to medium indirect light.