To use simply push into the neck of any empty bottle, from 0.5 litre up to 2 litre in capacity.
The Green Spike will then support the bottle close to the plants you are watering.
7 inches (18.5cm) high.
Please Note: This Green Spike is part of the Iriso Drip Watering System. It will need to be joined to a Dripper with the use of some 4mm Tube - both Dripper and Tube are available to purchase separately (see you may also like below).