How can I tell if my cucumber plants are being underwatered and what steps can I take to ensure they receive the proper amount of water?

You can tell if your cucumber plants are being underwatered if the leaves start to wilt, turn yellow, or become dry and crispy. To ensure they receive the proper amount of water, you can check the soil moisture regularly by sticking your finger into the soil. Water the plants deeply and consistently, making sure the soil is evenly moist but not waterlogged. Adding a layer of mulch can also help retain moisture in the soil.