This typical headline from household and gardening tips usually refers to activated charcoal tablets (or alternatively, aspirin/paracetamol).
In online gardening tips, these tablets are used for the following tricks with orchids:
- Activated Charcoal (Medicinal Charcoal Preparation)
Effect: Acts as a natural antiseptic and binds moisture and bacteria.
Use for Rot: Crushed activated charcoal is sprinkled on cut, rotten roots or stems to stop fungal growth and rot, which are often the cause of bud drop.
In the Watering Water: A crushed tablet in the water filters out harmful substances and keeps the potting mix clean.
- Aspirin (Acetylsalicylic acid)
Effect: Salicylic acid is a natural plant hormone that strengthens the orchid’s immune system and reduces stress (e.g., after repotting or during temperature fluctuations).
Application: Dissolve half a tablet in 1 liter of lukewarm water and spray or water the orchid with this solution to prevent bud drop due to stress.
Practical tip: If an orchid drops buds, it is usually due to drafts, insufficient light, or waterlogging. Activated charcoal is excellent for damaged roots; however, the underlying causes, such as location and watering practices, should also be addressed