Short answer: No. During Paryushan, potato should be avoided.

Why:

• In both Shvetambar Paryushan (8 days) and Digambar Das‑Lakshan (10 days), Jains take stricter vows of ahimsa in food.
• Potato is a root (kand-mool). Uprooting it kills the plant and disturbs countless tiny lives in the soil; the tuber itself harbors many living beings and can sprout new life. To minimize himsa, roots like potato, onion, garlic, carrot, beet, radish, etc., are avoided—especially during these sacred days.

Simple guidance for Paryushan food:

• Avoid all root vegetables.
• Eat before sunset and use boiled/filtered water.
• Prefer simple, non-root vegetables (e.g., gourds, pumpkin, cucumber, tomatoes), lentils, rice, and moderate spices.
• Many also reduce quantity (upvas/ayambil/ekasana) according to capacity.

This practice is common to both Shvetambar and Digambar traditions, with personal strictness varying by vow.