• Ellaise soil moisture sensor in front of its box, with the quick start guide
  • The SoilSure sensor in the probe of Ellaise
  • A pot cut open. A finger reaches 2 inches into the soil and Ellaise reads 4 inches down
  • A table that compares the finger test, a $10 meter and Ellaise
  • A grower in a nursery with an Ellaise sensor in every pot
  • Three phone screens: the soil moisture as a number, an alert and the history of a pot
  • The three steps: push it into the soil, connect it to your phone, set the level
  • Four facts: a sealed probe, no bare metal, batteries for over a year, heat and frost
  • Ellaise in a chunky aroid mix and in a cactus and succulent mix
  • Customer photos of Ellaise in houseplant pots
  • Results reported by customers in the questionnaire
  • 60-day money-back guarantee
4.8 3,274 reviews

Ellaise

Soil moisture sensor with SoilSure® Technology

94% of professional gardeners recommend it
$54.99

Ellaise is a sensor that stays in your plant’s pot. It measures the moisture of the soil at the roots and shows it on your phone as a number from 0 to 100%.

  • SoilSure® sensors are the most accurate soil moisture sensors on the market.
  • The probe reads 4 inches down, where the roots are. The top of the soil dries days before the soil at the roots.
  • Your phone tells you when to water. You set the moisture level for each plant once.
  • It stays in the soil all year. The probe is sealed and has no bare metal, so it does not corrode.
Recommended by professional gardeners
“Most of the plants I am asked to save were overwatered. The soil was dry on top and wet at the roots. Ellaise reads the soil at the roots.”
Headshot of Margaret Holloway. Woman in her 50s in a greenhouse, green work apron.
Margaret Holloway Head gardener, 26 years with indoor plants
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60-day money-back guarantee. No questions asked.
Delivery takes 6 to 8 days.
  1. Ordered Today
  2. Shipped 1 to 2 days
  3. Delivered 6 to 8 days
Verified buyer
“It showed 58% on a day I was sure the pot was dry. I waited nine more days before I watered. My fiddle leaf fig has not dropped a leaf since.”
Selfie of Rachel K. next to a fiddle leaf fig with Ellaise in its pot.
Rachel K. Has 14 houseplants
  • Sensor: Ellaise SoilSure®
  • Soil moisture: 0 to 100%
  • Soil temperature: -4 to 140°F (-20 to 60°C)
  • Probe: 3.9 in (10 cm) long
  • Size: 6.9 x 1.2 x 0.8 in (17.6 x 3.2 x 2 cm)
  • Water protection: IP67
  • Connection: WiFi 2.4 GHz, no hub
  • App: Smart Life or Tuya, free for iPhone and Android
  • Power: 2 AAA batteries (not included)
  • Ellaise sensor
  • Quick start guide

Ellaise

$54.99

Recommended by professional gardeners

94%

of the 201 professional gardeners and growers in our 2026 survey would recommend Ellaise.

Headshot of Margaret Holloway. Woman in her 50s in a greenhouse, green work apron.
Margaret Holloway Head gardener, 26 years with indoor plants
“Most plants I am asked to save were overwatered. Ellaise reads the soil at the roots, where rot starts.”
Headshot of Dr. Karen Whitfield. Woman in her 40s in a soil laboratory, lab coat.
Dr. Karen Whitfield Soil scientist, 17 years in soil research
“A lab measures soil moisture by weighing the soil, drying it in an oven and weighing it again. Ellaise matched that method on all 24 samples I tested.”
Headshot of Daniel Reyes. Man in his 40s between nursery benches, work shirt.
Daniel Reyes Nursery owner, grows 30,000 potted plants a year
“I put two Ellaise sensors in the same pot. Both showed 41%.”
Headshot of Priya Nair. Woman in her 30s in an office lobby with large plants.
Priya Nair Horticulturist, cares for the plants of 40 offices
“The sensors stay in the pots all year. I check every plant on my phone before I drive out.”

More than 310 nurseries, greenhouses and plant shops use Ellaise.

Inside the probe

Ellaise SoilSure® Technology

The probe uses sensors with Ellaise SoilSure® Technology. These are the most accurate soil moisture sensors on the market.

Ellaise lying on grey paper, the black probe to the left and the white head to the right.
SoilSure® sensor
  • Two Ellaise sensors in the same pot show the same number.

Why the finger test and the $10 meter get it wrong

2 in 4 in DRY WET

A finger reaches 2 inches into the soil. The soil there is dry.

Ellaise reads 4 inches down, where the roots are. The soil there is still wet.

  • A pot dries from the top down

    The top 2 inches can be dry while the soil at the roots is still wet. Roots that stay wet get no air, and they rot.

  • A $10 meter measures with bare metal

    Its metal tip measures how well the soil carries electricity. Fertilizer changes that, so the needle moves when the moisture has not changed. The metal corrodes in wet soil, so the meter cannot stay in the pot.

  • A watering schedule cannot see the soil

    A pot dries faster in summer, near a window and when the plant grows. A reminder every Sunday knows none of that.

  • Ellaise reads at the roots and stays there

    The probe reaches 4 inches down. It is sealed and has no bare metal, so it stays in the soil all year and measures every minute.

Finger $10 meter Ellaise
Reads 4 inches down, at the roots
Shows a number from 0 to 100%
Repeats the same reading in the same soil
Stays in the soil all year
Alerts your phone when the soil is dry
Keeps the history of every pot

It reads in every potting mix

  • Potting soil
  • Coco coir
  • Cactus and succulent mix
  • Chunky aroid mix
  • Peat-free compost

Ellaise fits any pot that is at least 5 inches (13 cm) tall.

A cheap meter with two metal prongs lying next to Ellaise on a potting bench.
“My old meter read dry in every pot, even one I had just watered. Ellaise showed 18% in the cactus and 63% in the fern on the same day.”
Mark D.Used a $12 meter before Verified buyer

Customer photos

4.8 from 3,274 reviews
Monstera in a white pot on a wooden floor. The white head of Ellaise stands in the soil. Casual phone photo.
“It showed 61% when the top felt bone dry.”
Nina P.
Two Ellaise sensors side by side in the soil of one large pot.
“I put two in one pot to test them. Both showed 44%.”
Greg H.
Fiddle leaf fig by a window with Ellaise in the pot, new light green leaves at the top.
“Two fiddle leaf figs died before this one. This one has seven new leaves.”
Aisha B.
Snake plant in a terracotta pot on a shelf, Ellaise in the soil.
“My snake plant needed water after 23 days. I used to water it every week.”
Laura S.
Balcony with herbs in pots in the sun, Ellaise in the basil pot.
“In hot weeks my basil needs water every second day. The alert tells me.”
Ben W.
A peace lily on a side table with Ellaise in its pot, a suitcase by the door behind it.
“I was away for ten days and checked all six pots from the hotel.”
Carmen V.

Used in nurseries, greenhouses and plant shops

Headshot of Daniel Reyes. Man in his 40s between nursery benches, work shirt.
Daniel Reyes Nursery owner. Grows 30,000 potted plants a year.
“A sensor is only useful if I can trust its number. I put two Ellaise sensors in one pot and both showed 41%. I moved them to a dry pot and both showed 17%. We now keep one in every stock plant.”
Headshot of Margaret Holloway. Woman in her 50s in a greenhouse, green work apron.
Margaret Holloway Head gardener. 26 years with indoor plants.
“A plant with wet roots and a plant with dry roots look the same from above. Both droop and both turn yellow. The number tells me which one it is before I pick up the watering can.”
Headshot of Priya Nair. Woman in her 30s in an office lobby with large plants.
Priya Nair Horticulturist. Cares for the plants of 40 offices.
“My sensors have been in the soil for 14 months. They get watered and fertilized with the plants. Not one has corroded or stopped working.”
Greenhouse bench with rows of potted plants, an Ellaise sensor standing in each pot. A grower in a green apron holds a phone.

Daniel Reyes keeps an Ellaise sensor in every stock plant of his nursery.

Made to stay in the soil

  • The probe is sealed It is rated IP67. Watering and rain do not harm it.
  • No bare metal No metal touches the soil, so water and fertilizer cannot corrode it.
  • Batteries last over a year Two AAA batteries power it for more than 12 months.
  • It works in heat and frost It measures from -4 to 140°F (-20 to 60°C).
A hand holds Ellaise just pulled out of a pot, soil on the clean black probe.
“Mine has been in the same pot for seven months. I pulled it out last week to look. The probe looks like the day it arrived.”
Joyce M. Verified buyer

How to use it

  1. Close view of fingers pushing the black probe into dark potting soil.
    Step 1

    Push it into the soil

    The probe goes straight down, halfway between the stem and the edge of the pot. The white head stays above the soil.

  2. A hand holds a phone next to Ellaise in the pot of a monstera. The app shows that the soil sensor is added.
    Step 2

    Connect it to your phone

    Two AAA batteries go in the back. The Smart Life app or the Tuya app finds the sensor and joins it to your home WiFi. No hub is needed.

  3. A thumb sets the level to 30% in the app on a phone.
    Step 3

    Set the level for your plant

    You choose the moisture level the soil should not drop below. When the soil reaches it, your phone tells you to water.

The sensor stays in the pot and measures the soil every minute.

What you see on your phone

The moisture of the soil, as a number. The app calls it Humidity.

An alert when the soil reaches your level

The history of each pot, by day, month and year

Ellaise works with the Smart Life app and the Tuya app. Both are free for iPhone and Android.

Ellaise next to its open box and a phone on a kitchen table.
“From opening the box to the first number on my phone took me four minutes.”
Paula R. Verified buyer
Customer questionnaire

Results reported by customers

We send a questionnaire to every customer 90 days after delivery. 2,406 customers have answered.

  • 93% said the number matched the soil when they checked it by hand
  • 91% found out they had been watering too often
  • 88% have not lost a plant since they started using Ellaise
  • 95% would recommend Ellaise to a friend or family member

Self-reported answers from 2,406 Ellaise customers.

Woman in her 30s next to a tall fiddle leaf fig, Ellaise in the pot. Photo taken by a partner.
“I watered every Sunday for two years. The number showed me that on most Sundays the soil was still wet.”
Megan F. Has 9 houseplants
Man in his 60s holding a peace lily in a pot with Ellaise in it, kitchen behind him.
“I lost four peace lilies before this one. This one has lived for eleven months.”
Walter S. Grows peace lilies
Young woman at a desk with a pothos and an Ellaise sensor, phone in her hand.
“I forget my plants for weeks. Now my phone tells me the day one of them needs water.”
Tasha N. Has 22 houseplants

60-day money-back guarantee

Use Ellaise for 60 days. If you want your money back, for any reason, you get all of it back. We do not ask why.

  1. You have 60 days

    The 60 days start on the day your Ellaise is delivered. You can use it in your pots the whole time.

  2. You send one email

    Reply to your order confirmation email and say that you want a refund. You do not need to give a reason.

  3. You send it back for free

    We email you a prepaid return label within one business day. You can use any box.

  4. You get your money back

    We refund the full price to your original payment method on the day the carrier scans your parcel. Your bank shows it within 3 to 5 business days.

  • Opened and used products are covered.
  • No reason is needed.
  • Return shipping is free.
Two Ellaise boxes in a padded envelope with a prepaid label on it.
“I ordered five and needed three. I sent two back. The label came the next morning and the refund four days later.”
Irene B.Returned two sensors Verified buyer

Questions and answers

How accurate is it?

The probe uses sensors with Ellaise SoilSure® Technology. These are the most accurate soil moisture sensors on the market. Two Ellaise sensors in the same pot show the same number.

At what number do I water?

You set one level for each plant. Most leafy houseplants are watered at 30%. Cacti and succulents are watered at 10%. Ferns and other plants that like wet soil are watered at 40%. Your phone alerts you when the soil drops to the level you set.

Does it work in my soil?

Yes. Ellaise reads in potting soil, coco coir, cactus and succulent mix, chunky aroid mix and peat-free compost.

What size of pot does it fit?

It fits any pot that is at least 5 inches (13 cm) tall. The probe is 4 inches long and reads the soil down to its tip.

Can it stay in the soil all the time?

Yes. The probe is sealed and rated IP67, and no bare metal touches the soil. Watering, fertilizer and rain do not harm it. Outdoors it works from -4 to 140°F (-20 to 60°C).

How does it connect to my phone?

Ellaise works with the Smart Life app and the Tuya app. Both are free for iPhone and Android. Ellaise joins your home WiFi on the 2.4 GHz band, and no hub is needed. The app shows your plants wherever you are.

How long do the batteries last?

Ellaise runs on two AAA batteries, and they last more than 12 months. The app shows the battery level. The batteries are not included.

Can I use it for several plants?

Each sensor stays in one pot. The app holds as many sensors as you have plants and shows each one under the name you give it.

Does it measure anything else?

It also measures the temperature of the soil, in °F or °C.

When will it arrive?

Delivery takes 6 to 8 days. The dates for an order placed today are shown under the ADD TO CART button.

What if it does not work for me?

You have 60 days from delivery to try it. If you want your money back, for any reason, you get a full refund and a prepaid return label. We do not ask why.

Customer reviews

4.8 3,274 reviews
5 ★84%
4 ★11%
3 ★3%
2 ★1%
1 ★1%

95% of customers would recommend Ellaise.

Customer photos 1,041 photos