Kotzer

From Halachipedia

Basics

  1. Uprooting or severing any part of a living plant is forbidden on Shabbat under the category of Kotzer (Harvesting). [1]
  2. It is forbidden to break a branch off a tree, remove a leave, pick a fruit or flower from a tree on Shabbat. [2]
  3. Picking a fruit on Shabbat is forbidden. [3] However, one may remove a fruit from a branch which was detached from the tree from before Shabbat. [4]
  4. It is forbidden to pick mushrooms or remove moss from a rock it is growing on. [5]

References

  1. 39 Melachos (Rabbi Ribiat, vol 2, pg 281), Shemirat Shabbat KeHilchata 26:10
  2. 39 Melachos (Rabbi Ribiat, vol 2, pg 281), Shemirat Shabbat KeHilchata 26:10
  3. S”A 336:12
  4. Shemirat Shabbat KeHilchata 26:10 quoting Rama 336:8, Biur Halacha 336:8 D"H SheNishpach writes that one shouldn't remove a fruit unless the branch is completely detached from the tree. Shemirat Shabbat KeHilchata (chap 26 note 38) quotes a dispute between the Machsit HaShekel and Pri Megadim whether one is allowed to remove leaves from a branch that was detached from the tree from before Shabbat.
  5. 39 Melachos (Rabbi Ribiat, vol 2, pg 282), Shemirat Shabbat KeHilchata 26:10