Yes — I checked the original video and the available gardening guidance.
The “1 spoon” ingredient is not a mysterious powder: the YouTube video’s description says the homemade fertilizer uses 1 onion and water.
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However, the claim that it can revive completely dead roots and make an orchid bloom all year is not established by the evidence I found. For a struggling orchid, established advice is to remove genuinely dead/mushy roots with sterilized tools, preserve firm healthy roots, use a well-draining orchid medium, and avoid overwatering.
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Original YouTube video — “Sprinkle 1 spoon on dead orchid roots!”
Homes & Gardens — expert orchid root-repotting guidance
So I wouldn’t sprinkle onion directly onto dead roots based on that viral claim. If you’d like, I can also investigate the exact onion-water recipe shown in the video and whether it has any plausible benefit for orchids.
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