Harvst WaterMate Mini Greenhouse Irrigation Kit

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Do you want to go on holiday but you're worried about leaving your crops in the hands of your neighbour or relative? Well worry no more, the WaterMate mini automatic greenhouse irrigation kit from Harvst's innovative range of self-sufficient greenhouses and automatic irrigation systems has you covered.

The ingenious design of the WaterMate automatic irrigation system will provide your greenhouse crops with all the water they'll need, automatically and remotely, using a combination of environmental sensors and timers, all controlled using the Harvst web app for Android and iPhone but don't worry, it will still operate without an internet connection!

When your water supply has run out or if the temperature inside the greenhouse becomes too hot or cold you'll receive a notification by email, but once your sensors and timers are set up, this will be all you need to worry about. Note, however, that to receive an email, a wifi connection is required, but the timers and senors will continue to manage the self-watering without an internet connection.

You can opt to have your WaterMate operate using solar power or mains power. If you opt for solar, you will receive a control box complete with a solar panel and 3m of cable (which can be extended) or with a 240V mains supply with 5m of cable if you opt for mains powered. Generally, we would recommend the mains-powered version as it can water for long periods of time and deliver a higher volume of water in a shorter space of time, also, it won't be limited by sunlight so it will continue to operate over winter.

You also have a choice in how to supply your WaterMate with water: you can either connect straight to your garden hose or you can opt to have a pressurised and high flow rate, submersible pump from the options below which you can run from a water tank. It's simple to set up using the easy to follow instructions.

With your kit, you will receive a WaterMate control unit with either a solar panel or mains supply, a mini submersible water pump (if pump version is selected below), an air temperature sensor, dual electric water valves, 4m of 13mm braided hose to connect to water supply, 10m of LDPE distribution pipe, all the necessary joints and pipe fittings, 10 greenhouse frame pipe fixings, 20m of 4mm micro-irrigation pipe, 24 x pressure compensated drippers (4LPH) with ground stakes, 12 x 4mm hose adapters, 10 x 360° sprayers covering 1m² each, 10 x 180° sprayers covering 1m² each, 6 x 4mm water taps and the Harvst app compatible with Android or iPhone.

Key Features

  • Automatic irrigation system for a small-sized greenhouse or cold frame
  • Uses temperature and timers for ultimate control of when watering occurs
  • Dual-zone capability for extra versatility and capacity
  • WiFi-enabled to use with the Harvst web app (Will run without internet too)
  • The web app will email you alerts when the temperature is either too low or too high or if your water tank is empty - requires an internet connection
  • Supports up to 40 drippers (40 plants), or 12 sprayers for 6m² coverage
  • From the options below choose between a mains or solar-powered system
  • From the options below choose whether to use your tap or to receive a submersible water pump to supply your system


Brand: Harvst
Coverage: 6m²

Select Your Options

Option 1> Solar or Mains Powered

Mains Powered

Mains Powered (WM-MINI-M)

Solar Powered

Solar Powered (WM-MINI-S)

Option 2> Water Supply

Garden Hose

Garden Hose (H)

Water Pump

Water Pump (P)

Option 3> Soil Moisture Sensors

Soil Moisture Sensors Pair

Soil Moisture Sensors Pair (SNSSOIL22)

Contains a pair of sensors each coming with 1m of cable complete with a cable splitter.
Each sensor will have its own ID: ID 1 and ID 2. The second sensor (ID 2) is marked with a red band.

Option 4> Control Unit Mounting Plate

Control Unit Mounting Plate

Control Unit Mounting Plate (CTRL.MPLATE)

Includes: Mounting plate, M6 cropped head aluminium nuts and bolts and M5 stainless nuts and bolts

Your Selected Options:

  • Mains Powered
  • Garden Hose

£199.00 inc. VAT

Delivery Information

Fast Free Delivery within England and Wales

Delivery to Scotland is inclusive up to and including Glasgow and Edinburgh but not above. Delivery will typically be made within 10 working days but may be extended during busy times of the year. Extra charges will apply to Scottish Highlands and Islands. In some cases we can even deliver outside the mainland e.g. Channel Isles and arrange the VAT element for you. In all instances please contact us today for a personalised quote.

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