SUSTEE Large, Set of 5

Wasn’t sure about these hydration sticks initially, but now that I have them, they are worth it! I have more plants than time some days so these sticks that turn blue when the plant has enough water and white when they need water does help! No dead plants so far!

Very easy to use

unit drys out with in a day.. says water plants again.. iam like really break out high teck says no dont water..got large unit for large pot... hummmmm

Does not work, once blue shows, never changes. Cheaply made, the blue is just a piece of blue paper that rises and then gets stuck at the top, ruining many plants.

like other reviews have said, unfortunately these worked great the first time, but now they won't even dry out at all. they stay blue even tho everything may be dry.... example- I even took a blow dryer to the thing to see if I could manually dry into use on a different plant......nope! just stayed blue....I even disassembled it to try to dry the fabric interior, bit still it stayed blue. so I guess they are single use.

It works generally well but I find that the indicator turns white (meaning the water-absorbing material inside the tube inserted into the soil has dried out) far too quickly even when there's still plenty of moisture left in the soil. So really blue = wet and white = anywhere from moist to dry and you really have to be careful because if you watered as soon as the indicator turned white you will likely overwater and kill your plant.It's still useful in that the time it takes to turn from blue to white can tell you how quickly the soil is drying and I generally wait a few days after it turns white before I check the soil and water if it feels sufficiently dry.

Ok

はじめて水を注いだときは青くならず、いくつかの口コミにあつた不良品かとがっかり…でも、しばらくすると色が変わってきて、浸透までの時間差だったのだと安心しました。水やりの目安がわかりやすくて助かっています!

I'm new to these so I'm not sure yet ...says it takes 20 minutes to turn blue but took more than 4 hrs ....Hope it works when dry....I'll give an update soon

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.