The indicator remains visible at all times
No need for a new measurement each time. A glance at the top part is enough to see if it’s time to water.
Lechuza Watering indicator
Normal price
€8,00
Shipping within Greece only. This product cannot be shipped to your selected country.
Lechuza Watering indicator
Normal price
€8,00
Shipping within Greece only. This product cannot be shipped to your selected country.
Plant Care Accessory · Substrate Moisture Indicator
Watering Indicator
The discreet indicator that stays inside the planter and shows you at a glance when the plant needs water. The internal colored core reacts to the moisture of the substrate: it turns blue when there is enough water and returns to white when it is time to water.
White = time to water Blue = sufficient moisture Soil · PON · mixes Battery-free Indoor & outdoor use
18 cmTotal length
7–8 cmPlacement depth
20–30 minFirst activation
9 months–2 yearsPer substrate
Suitable for any plant, in soil, mineral substrate such as PON, or a mix of the two. It measures the moisture of the substrate — not the water level in a reservoir.
Permanent indicator · no electronics
The color shows when watering is needed
The Watering Indicator is placed once and remains in the substrate. Its colored cotton core responds to moisture and transfers the indication to the upper visible part.
- Works in potting soil, LECHUZA-PON, other mineral substrates, and mixtures.
- The white indicator means the plant needs water.
- The blue indication means that the substrate has enough moisture.
- Remains permanently in its position and can be read without being removed or rotated.
- No batteries, charging, or other power source required.
- 1Visible indicatorWhite or blue color
- 2Top holeRemains outside the substrate
- 3Cotton coreReacts to moisture
- 4Bottom holeFully covered
Also ideal for pure PON
It operates reliably on mineral substrates, where moisture is not easily assessed by touch or by the appearance of the surface.
Fewer watering mistakes
The clear change from blue to white helps to avoid both premature watering and prolonged dryness.
Two colors, one clear decision
The indicator refers to the moisture of the substrate around the lower hole of the gauge.
The plant needs watering
When the visible part returns to white, the substrate has dried enough to require water.
There is sufficient moisture
As long as the indicator remains blue, no new watering is needed. Wait for it to return to white.
Correct placement in four steps
The position of the indicator is critical for it to correctly contact the moisture of the substrate.
Place the indicator near the root zone, without pressing it onto thick roots.
The bottom hole must be fully covered, while the top hole and the indicator remain outside.
After the first placement, the indicator needs approximately 20–30 minutes to turn blue.
Water when the indicator turns white and wait while it remains blue.
Activate it first in a glass of water
If the substrate is already wet, leave the indicator in a glass of water for about 20 minutes. As soon as the reading turns blue, place it in the planter at the correct depth.
Needs change, the indicator adjusts
Evaporation increases in hot weather, in sunny locations, and in heated spaces. Instead of a fixed calendar, follow the actual change in color.
What the package includes
A complete moisture indicator, ready to place in the substrate.
1 Watering IndicatorTotal length 18 cm
Colored coreWhite and blue moisture indicator
No power requiredNo battery, charging, or power supply needed
Not included planter, plant, substrate, or other accessories.
!
Do not remove or rotate it to read the indicator
The Watering Indicator remains permanently in the same position. Ensure that the lower hole is fully covered by the substrate and the upper hole remains exposed. The recommended replacement time varies depending on the substrate.
When replacement is recommended
The duration of reliable indication depends on the material surrounding the indicator. The following times are the official indicative recommendations of LECHUZA.
Organic soil & organo-mineral substrates, such as TERRAPONapprox. 9 months
Inorganic & mineral substrates, such as expanded clay and LECHUZA-PONAbout 9–12 months
Hydroponicsapprox. 1–2 years
Sphagnum & barkapprox. 1–2 years
Peatapprox. 1 year
01 year2 years
The solid green bar shows the basic duration and the striped extension the recommended range.
Which tool fits your planter?
The Watering Indicator and the Moisture Meter check moisture in different ways and serve different needs.
Alternative option · pots with soil
LECHUZA Moisture Meter
The Watering Indicator stays permanently in the planter and works in soil, PON, and mixtures. If you want a portable tool for instant checking in different planters with conventional soil, the Moisture Meter is inserted only during measurement and removed immediately afterward. It is not used in pure PON.
See the Moisture Meter
Frequently asked questions
What do the white and blue colors indicate?
White indicates that the substrate has dried, and the plant needs watering. Blue indicates that there is still enough moisture and no additional water is needed.
Does it work in LECHUZA-PON and other mineral substrates?
Yes. The Watering Indicator is suitable for potting soil, pure LECHUZA-PON, other mineral substrates and mixtures, for indoor or outdoor plants.
How deep should it be placed?
Insert it 7–8 cm into the substrate. The lower hole must be completely covered, while the upper hole and the visible part of the indicator must remain outside.
How long does it take to show the first indication?
After the first placement and watering, the indicator changes color within about 20–30 minutes. If the substrate is already wet, you can first place it in a glass of water for about 20 minutes until it turns blue.
Can it remain permanently in the planter?
Yes. It is designed for permanent placement in the substrate. For proper reading, do not remove it or rotate it.
Does it need batteries, and when should the indicator be replaced?
It does not require batteries, charging, or any other power source. The recommended replacement time depends on the substrate: about 9 months in organic soil, 9–12 months in mineral substrates such as PON, about 1 year in peat, and 1–2 years in hydroponics, sphagnum, or bark.
What is the difference from the LECHUZA Moisture Meter?
The Watering Indicator remains permanently in the planter and works in soil, PON, and mixtures. The Moisture Meter is a portable instant measurement tool for conventional soil, is removed immediately after use, and is not suitable for pure PON.
© Original product description by Greenleaf Garden Center. All rights reserved. Copying is prohibited.