Top: plant 艹, bottom: livestock, breeding 畜 (The mysterious 玄 field 田 is used to raise livestock [because it is not sufficiently fertile for grain crops]) [mysterious = 玄 = thread 玄 at which a mysterious magnet 磁 hangs]
Mnemonic
Plants for raising livestock have to be grown & stored.
This radical is easy to remember if you think of “magnet 磁” (cf. magnet, porcelain 磁 [cí]), where stones 石 are hanging at strings 糸 (simplified to 幺 and fixed with a bracket 艹) behave mysteriously.
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