There is a question here asking if sea sponges are Kosher. The answers seem to center around the idea that regardless of if they have animal cells, a halachic classification might depend on how it appears (and coral, for example, vaguely look like some sort of plant).

As a followup, are plants that exhibit rapid plant movement such as the venus flytrap, which have moving parts to eat insects considered to be animals in that they wouldn't be Kosher due to this characteristic?

  • 1
    Adnei Hasadeh(kilaiyim 8:5) half plant half person considered a chayah.
    – sam
    Jul 26, 2013 at 2:28
  • 1
    @sam Is there a way in which adnei hasadeh are considered plants - biologically or otherwise?
    – WAF
    Jul 26, 2013 at 13:39

1 Answer 1


I asked R' Natan Slifkin this question by email, and he responded that no, rapidly-moving plants are not considered animals, as dictated by common sense.

  • I'm sure you have a lot of fun emailing people who have their own Wikipedia pages ;)
    – MTL
    Jul 8, 2014 at 3:54
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    Does this include Triffids?
    – TRiG
    Oct 7, 2014 at 17:55
  • What are they instead?
    – Adám
    Dec 14, 2014 at 15:49
  • 1
    Please source common sense.
    – Adám
    Dec 14, 2014 at 15:59

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