To water cultivated Dendrobium at home, follow these steps: first, ensure the potting mix is dry to the touch before watering. Then, water the plant thoroughly until water runs out of the drainage holes. Allow the excess water to drain and avoid waterlogging. Water once a week during the growing season and reduce frequency during the dormant period. Overwatering can lead to root rot, while under-watering can cause stress and leaf loss.

The reason for these guidelines is rooted in the specific watering needs of Dendrobium orchids. Dendrobiums thrive in well-draining soil, as they are native to tropical and subtropical regions where heavy rainfall is common but soil is not waterlogged. According to a study by the American Orchid Society, overwatering is the most common cause of plant death in orchids, as it can lead to root rot and fungal infections. Conversely, under-watering can stress the plant, leading to leaf loss and reduced flowering. By following the proper watering schedule, you can maintain the health and vitality of your Dendrobium orchid.