Halachic Guides

Orlah, Chapter 3b: Intermediate Plant Classification as Vegetables or Trees

While most plants fall into neat categories as trees or vegetables, some are on the seam and have characteristics of both. This chart classifies such intermediate plants, which has bearing on the laws of orlah, berachot and kila’im.

Kilei Ilan (grafting): scion and rootstock combinations for trees and vegetables

Laws of kilei ilan: permitted and prohibited scion and rootstock combinations for fruit trees, citrus trees, ornamental trees, and vegetables (update: Av 5778-July 2018)

Digital Seder Tu BiShevat

Digital Seder Tu BiShevat for family and community use plus activity guide

Procedure for Separating Terumot and Ma’aserot

How exactly do we separate terumot and ma'aserot – the full procedure and the exact text

Orlah, Chapter 2: Calculating Orlah Years

How do you go about calculating orlah years for trees? How is that different from the orlah count for fruit?

Orlah, Chapter 7: Orlah fruit in the marketplace

Which fruits could be orlah in the marketplace? What happens when orlah fruit get mixed in with permitted fruit? On buying fruit in the marketplace and ratios of permitted to forbidden fruit required to nullify orlah.

Orlah, Chapter 5: Renewal of Trees: Planting, Transplanting, Grafting, Rootsuckers, and Layering

Does the orlah count restart when transplanting trees? For grafted trees, does it begin from the time of the graft or from when the rootstock was planted? On partially uprooted trees, rootsuckers, layered branches, and more.

Orlah, Chapter 6: Laws of Potted Saplings – Orlah and Nurseries

Laws of orlah as they relate to nurseries and unperforated pots. In which conditions can the orlah count continue for trees growing in nurseries?

Orlah, Appendix: Fruit in the Marketplace - Review

Can we be sure we’re not buying orlah fruit in the supermarket? In the shuk? A review of the kashrut practices employed in the field and sectors where orlah fruit can be an issue.

Orlah, Chapter 4: Saplings exempt from and subject to orlah laws

Are trees planted as a living fence subject to orlah, and if not in which cases? What about self-seeding trees that sprout up on their own?