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Soil thermometer - Soil thermostat
€7.00
4.75/5
(8 Ratings)
These thermometers are perfect for measuring the temperature in your plants’ substrate.
Description
Soil Thermometer: Measures substrate temperature
Stick this thermometer in your flowerpot’s soil to easily and simply figure out its temperature. You can use this technique to figure out when to best water your plants; if the substrate is too warm you may accidentally cook the roots. The warmer the water the less oxygen it contains too, which means your plants will be able to absorb much less nutrients.
Make sure soil is at the perfect temperature
If the water is too cold, you’ll fully stop root growth. Once it goes under 16°C your plants will begin to suffer, so we’d recommend bringing them inside or covering them somehow to heat them up. Use Rhizotonic to boost root performance. Your substrate should be between 18 and 25°C when watering your plants, although this can be quite hard to do during hot summers.
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Same category products Soil thermometer - Soil thermostat
06/10/2025
Honestly, this thing is a game-changer for clones and seedlings. Keeping that root zone stable around 22-24°C makes a huge difference. I saw much faster root development compared to before. Super easy to dial in the temp. Essential for any serious grower, no doubt.
10/09/2025
Why didn't I buy this sooner? My cuttings are happier than ever, you can tell they're not cold. Good quality and the price, unbeatable! This is amazing.
Translated from Spanish
¿Por qué no lo compré antes? Mis esquejes están más felices que nunca, se ve que no pasan frío. Una buena calidad y el precio, ¡incomparable! Esto sorprende.
28/08/2025
Very useful for knowing when to water, you avoid boiling the roots and preventing them from absorbing nutrients properly. It's a must.
Translated from Spanish
Muy útil para saber cuándo regar, evitas cocer las raíces y que no absorban bien los nutrientes. Es un must.
16/08/2025
Must-have for winter. No more guessing substrate temperature. With this gizmo the roots don't suffer one bit; my plants really show it, they grow better.
Translated from Spanish
Imprescindible para el invierno. Se acabó lo de adivinar la temperatura del sustrato. Con este cacharro las raíces no sufren nada; mis plantas lo notan un montón, crecen mejor.
14/08/2025
Must-have for growing! It's saved me more than once from watering when the substrate was too hot. My plants absorb nutrients way better now, highly recommended.
Translated from Spanish
Imprescindible para el cultivo! Me ha salvado más de una vez de regar con el sustrato demasiado caliente. Así mis plantas absorben mejor, muy recomendable.
02/08/2025
Good thermometer. Helps to know if the substrate is ok for watering, prevents cooking the roots. Really very useful.
Translated from Spanish
Buen termómetro. Ayuda a saber si el sustrato está ok para regar, evitas cocer las raíces. Muy útil de verdad.
01/07/2025
Fast and perfect shipping, no delay. The thermometer works great for the substrate, very happy with the purchase. I recommend it.
Translated from Spanish
Envío rápido y perfecto, sin demora. El termómetro funciona genial para el sustrato, muy contento con la compra. Lo recomiendo.
02/03/2024
It's great, measures the substrate temperature perfectly. Very handy.
Translated from Spanish
Es genial, mide la temperatura del sustrato a la perfección. Muy práctico.