How to harvest your tasty watercress
When the stems are about 15cm tall, use scissors to snip the top stems (get an adult to help!) It will keep growing if you never take more than a third of the plant at any one time. Watercress and is best harvested for immediate use. It will hold in the fridge up to 3 days in a plastic bag but prefers being submerged in water. It will not dry or freeze. It wilts quickly so should be used immediately, but it can be stored in a container in the fridge or submerged in water.