• Sustee Complete Trial Pack
  • Pothos Plant with a Sustee in a pot measuring the amount of moisture in the soil.
  • Two potted houseplants with Green and white Sustee moisture sensors inserted in the soil, showing an easy way to monitor watering needs for healthier, thriving plants.
  • Measurement chart for different sizes that Sustee come in on a grey background
  • Sustee water indicator Gif showing how it changes colour to show you when to water the plant
  • Three black Sustee moisture sticks for large, medium, and small plant pots
  • Green Sustee moisture stick opened with refill stick next to it, showing reusable plant watering system
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Sustee

Sustee Complete Trial Pack – All Sizes + Refills

Sustee Complete Trial Pack – All Sizes + Refills

  • Ships from Australia
  • Plant lover approved
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$107.95 AUD
$107.95 AUD
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Choose your Colour

Know exactly when to water your plants – and keep your Sustees lasting for years with extra refills included.

The Sustee Complete Trial Pack includes one Small, Medium, and Large Sustee plus two refills for each size, so you can try them all and enjoy up to 2+ years of continuous use per stick. That’s complete peace of mind for every plant in your collection.

✅ Just pop it in your potting mix
💧 Blue = moist | ⚪ White = time to water
🌱 Sizes suit small herbs, medium indoor plants, and larger feature pots
♻️ Each stick lasts around 6–9 months, and with 2 refills each, you’ll get over 2 years of use per size

What’s included:

  • 1 × Sustee Small + 2 × Refills (for pots under 15cm)

  • 1 × Sustee Medium + 2 × Refills (for pots 15–21cm)

  • 1 × Sustee Large + 2 × Refills (for pots 21–30cm)

Designed in Japan, Sustee measures moisture right at the root zone for accuracy. It responds in around 10–20 minutes and is gentle on roots.

Why you’ll love it:
– One pack covers all pot sizes
– Includes 2 refills per size for long-lasting use
– Reusable, accurate, and mess-free
– Perfect for beginners and plant lovers alike

Keep every plant happy, hydrated, and thriving – with the complete set, you’ll always have the right size Sustee on hand for years to come.

👉 Ideal for houseplants, potted plants, indoor gardens, plant care kits, and gifts for plant lovers.

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Everything You Need to Know

How does Sustee work?

Sustee measures moisture at root level and changes colour to indicate when it's time to water. Blue means there is still sufficient moisture in the soil. White means it's time to water your plant.

What plants can I use Sustee with?

Sustee works with most indoor plants, tropical plants, flowering plants and outdoor potted plants including Monstera, Peace Lily, Fiddle Leaf Fig, Philodendron, Pothos, Rubber Plants, Orchids and many more.

What size Sustee do I need?

Choose your Sustee based on pot size:

  • Small: pots up to 12 cm
  • Medium: pots 12-18 cm
  • Large: pots 18-25 cm

How long does a Sustee last?

A Sustee moisture meter core typically lasts 6 to 12 months with regular use. The Sustee stick is reusable, but the inner cotton core is 100% natural and breaks down over time.

Does Sustee work in all potting mixes?

Yes. Sustee works well in most potting mixes, soil blends, bark mixes, coco peat, coco coir, akadama and sphagnum moss.

Sustee does not work in:

  • Pure hydroponic systems (water only)
  • Pure LECA
  • Pure perlite or pumice
  • Pure sand

If you're using a chunky aroid mix or a mix containing a high percentage of LECA, perlite or bark, ensure the Sustee wick is surrounded by some moisture-retentive material such as potting mix or coco coir so it can accurately detect moisture.

Tip: Sustee works best when inserted into the main root zone where moisture is retained the longest.

Do I need batteries or an app?

No. Sustee requires no batteries, charging, electronics or apps. Simply insert it into the soil and monitor the colour indicator.

Can I use Sustee outdoors?

Yes, Sustee can be used in outdoor potted plants. Performance may vary in extreme weather conditions.

Why is Sustee better than a moisture meter?

Unlike traditional moisture meters that need to be inserted each time you check your soil, Sustee stays in the pot and continuously indicates when your plant needs water.