Tells you when to water
Healthy plant


Watering is the biggest concern for those buying potted plants.

Incorrect watering is reported to be the cause of plant wilting 80% of the time.

Plants wilt because they are not thoroughly watered, but too much water leads to root rot more often than you would think.

With SUStee you will always know when is the perfect time to water your plants.

Unhealthy plant
Sustee in a pot for overlay


Just stick it in the pot and leave it there. A colour change will tell you the right time to water.

1. SET

Insert SUStee into the soil at the base of the potted plant to the depth between the “►” and “◀︎” arrow markers.


It will change colour from white to blue within 20 to 30 minutes after watering.


Blue ⇒ enough water in the soil.
White ⇒ in need of watering.

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SUStee is the first moisture checker with a pF value indicator (available water capacity) for your home!

With SUStee the root’s ability to absorb water – or the plant’s “thirst” becomes visible.

There is a “pF-value” spectrum which is good for all plants (“ideal moisture level “). SUStee is designed to start changing its colour from white to blue at the middle value of the “ideal moisture level “. This way, the “ideal moisture level ” suitable for every plant can be monitored for every type of plant and soil.

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How it works


SUStee’s inner core is made from non-woven cotton and will decompose because of bacteria in the soil.

Depending on the kind of soil you will have to replace the inner core within 6-24 months after insertion.

Changing the core is done in two steps. It is easy and can be done by anyone.

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SUStee’s award winning design is simple and minimalistic so it doesn’t take away from the beauty of your plants.

It was developed by the product designer Tetsutaro Nakabayashi and has won numerous international design awards. Its simple but well visible shape goes well with plants and furniture.

“It can even be used on succulents. I am relieved that I don’t have to worry about watering anymore.”

– a man in his thirties

“I gave SUStee to a friend of mine who loves flowers. She was really happy about it.”

– a woman in her twenties

“Now I can even ask inexperienced family members to water my plants and leave home carefree.”

– a woman in her forties

“Watering my many plants used to be a large part in my daily routine. Thanks to SUStee I can do that much quicker now.”

– a woman in her thirties

“My mother who is over 80 years old uses it with no problems.”

– a woman in her fifties

“Now I can grow more demanding plants and have more fun gardening.”

– a man in his forties

“It can even be used on succulents. I am relieved that I don’t have to worry about watering anymore.”

– a man in his thirties


SUStee comes in three different sizes and three chic colours so you can choose the perfect option for your potted plant friends.

Choose your size according to the diameter of the pot.

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Do you have questions about SUStee that you did not find answers to on this website?

Would you like to collaborate with us or become one of our resellers in your city?

Just want to say hello and have a chat?

Contact us, we will be happy to hear from you!