In Jain practice, Chaturmas is a period of intensified vows and mindful eating. There isn’t a universal, single ban on dry fruits across all communities.

• For most lay Jains, dry fruits (like almonds, pistachios, cashews) are commonly considered acceptable during Chaturmas, as they do not involve roots or fresh greens.
• Some stricter practitioners or certain local traditions may choose to limit or avoid certain snacks or processed foods, or to follow a more austere vrata during this period.

If you follow a specific tradition (Digambar or Swetambar) or have a local guru, check their guidance for exact practice during Chaturmas.

For further reading in Jain teachings, you can read more here