Estimated Delivery between October 19 and October 21.
Know when to water. Actually know.
When it's hard to tell whether soil is dry or still moist, this gives you a quick reading. Push the probe into the soil and read the analog needle across three zones — dry, moist and wet. There's nothing to charge, program or pair.
Around 11 in (28 cm) long, so it reaches below the surface of most pots to where the roots actually are. Soil use only: it doesn't measure pH, light or nutrients.
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An 11 in probe with an analog dial. Push it in, read dry, moist or wet, take it out. Nothing to charge.
Watering is the thing beginners get wrong most often, and not because they forget. It is because the top of the soil dries first and tells you nothing about what is happening around the roots, several inches down, where it matters.
A moisture probe reads that lower layer directly. The needle moves across three zones, dry, moist and wet, and you water on what it shows rather than on a schedule or a guess.
It is deliberately a single-purpose tool. There is nothing to charge, nothing to pair and no app, which is the whole appeal for most people who buy one.
Push the probe into the soil near the base of the plant, avoiding roots where you can.
Go deep enough to reach the root zone rather than just the surface layer.
Read the needle: dry, moist or wet.
Remove the probe once you have your reading rather than leaving it in the pot.
Wipe it dry before putting it away.
In a large pot, take a reading in two spots. Soil is rarely evenly wet all the way round.
Length: approximately 11 in (28 cm)
Reading: analog needle dial across three zones, dry, moist and wet
Power: none. No batteries, no charging, no app.
Measures: soil moisture only
Use: potted plants indoors or outdoors, in soil
This is a soil tool. It does not measure pH, light or nutrients, and it is not meant to be stood in water.
One version, so the choice is really between this and a digital meter.
Choose this if the only question you ask is whether to water today. It is quicker to use, there is nothing to charge, and an 11 in probe reaches the root zone in most pots.
Our 6-in-1 Digital Soil Meter makes more sense if you also want pH, fertility and light readings for a vegetable bed or an outdoor garden.
Soil only. Do not stand it in water or use it in a glass of water with a cutting.
It reads moisture and nothing else. No pH, no light, no nutrients.
Take the reading and remove it. It is not designed to be left in a pot permanently.
Very compacted or very stony soil gives poor contact and a less reliable reading.
Different plants want different things. Moist is right for a fern and too wet for a cactus.
Does it need batteries?
No. It is an analog needle, so there is nothing to charge, replace or pair.
Can I leave it in the pot?
Better not to. Take your reading and remove it; leaving a probe permanently in damp soil is not what it is built for.
Will it work in a glass of water?
No. It is a soil-only tool and should not be placed directly in water.
Does it measure pH or nutrients?
No, moisture only. If you want pH, fertility and light as well, our 6-in-1 Digital Soil Meter covers those.
What reading should I aim for?
It depends on the plant. Most houseplants are happiest watered when the needle reaches the dry end of moist; succulents prefer to sit in dry for a while first.
Why you'll love it
Reads where it matters. An 11 in probe reaches the root zone, not just the dry crust on top.
Nothing to charge. No batteries, no app, no pairing. Push it in and read the needle.
Three clear zones. Dry, moist or wet, which is the only answer the question really needs.
Why the top inch lies to you
More houseplants are lost to overwatering than to drought, and the reason is almost always the same misunderstanding. The surface of a pot dries out first and fastest. It looks and feels dry while the soil around the roots, three or four inches down, is still holding plenty of water.
So you water again, and the roots sit wet, and eventually they start to rot. Confusingly, a plant with rotting roots wilts exactly like a thirsty one, which prompts more watering.
A probe cuts through that. Read at root depth, water when the needle is at the dry end of moist for most houseplants, and let succulents and cacti sit in dry for a while first. In a big pot, check two spots, because one side of a root ball is often wetter than the other.
After a few weeks you will start to know your own plants well enough to guess correctly. That is the point: the tool is there to teach you the rhythm, not to be used forever.
A quick guide for your growing space
Heat
A plant under heat stress is already working hard. Treating or feeding a wilted plant in the middle of a hot spell tends to add to the problem. Water first, let it recover, then come back to it.
Humidity
Damp air keeps leaves wet for longer, and that is when fungal trouble gets its chance. Water at the soil rather than over the foliage, and leave room for air to move between pots.
Frost
Growth slows right down when it turns cold and roots take up much less. Most feeding and rooting products are worth pausing until the plant is clearly growing again in spring.
Small spaces
A pot holds a fixed amount of whatever you add to it, with nowhere for the excess to drain away to. Measure rather than eyeball, and flush the mix through with plain water now and then.
