Answer

Yes, watermelon is generally allowed in Digambar Jainism for householders, because it is a fruit and not a root vegetable.

Explanation

In Digambar Jain dietary practice, the main food restrictions usually focus on:

• Root vegetables like potato, onion, garlic, carrot, etc.
• Foods that involve greater harm to living beings
• Special restrictions during fasting or certain vows

Watermelon is usually considered acceptable because:

• It grows above the ground as a fruit
• It is not a root
• It is commonly eaten in Jain households

Spiritual Understanding

Jain food discipline is based on ahimsa, the principle of non-violence. Eating fruits like watermelon is generally seen as less harmful than eating root vegetables, because it avoids uprooting the whole plant.

Takeaway

Yes, you can usually eat watermelon in Digambar Jainism. If you are observing a special vrata, upvaas, or family-specific rule, follow that discipline as well.