SUStee Watering Indicator for Plants (Set of 5, Medium, White) - Smart Watering for All Plants, Works in All Soils | Minimalistic Design, Easy-to-Use, No Batteries | 100% Made in Japan

These things have helped me keep my houseplants alive much better than any other gadget so far.They're a bit pricey for what they are - if you have lots of plants, it does add up. But they are such a clever design, you may not mind. The refills are not very expensive , which is a blessing (it could have so easily been a "razor and blades" model with expensive refills to keep the revenue stream).They work so much better than any schedule based system (which I have also tried - and led to overwatering). Cheap moisture sensors I found to be so variable that they're almost pointless.If you're using them with succulents and cacti with fast draining soil, you'll want to follow the instructions to pre- activate them the first time you insert them as they may not get quite moist enough for long enough to activate just through watering. Also, when watering these kinds of plants, make sure to water the area around the sus tee directly as well to ensure it gets the contact with water it needs to reactivate - otherwise it may stay white even after watering and waiting 20 minutes.

Pleased to say they work, no more over watering.

I use these for my calatheas and plants that are in pots without drainage holes to help me figure out when i should water. It is so simple to use, you just stick it in the soil. They turn blue once the plants has been watered, and as the soil dries, you can see the blue strip getting lighter and eventually turning to white. I like this as it helps me plan ahead with my plants.

Absolute rubbish and a rip-off. They work for about a month, then stop showing accurate readings.The price for a piece of paper with a litmus end is a joke.Total waste of money. Get self-watering pots with a wick instead — they’ll save you a lot in the long run

This product works great but i have realised that after 6 -12 months the inserts needs to be replaced and are costing the same amount of money as the new product. I will go next time for smart water meters.

We all know the fear of overwatering our exotic plants… well these are modern, cute and easy to slot in. They work perfectly fine; waited to see it go white twice before I could confirm!A little pricier than I’d like to be honest but I won’t complain if it keeps the plants happy haha

These are fantastic, not technical no batteries or charging involved just simple to use and to know when you need to water your plants.They turn blue when they detect moisture and slowly go back to white as the soil dries, we have tried other more sophisticated types which have proved useless in comparison.

I ordered 10 in May, 5 in June for my household. It's now the start of October and 10 have failed. It seems the 'material' that senses water has 'eroded' away into a soggy tissue mess. They now no longer work.