If you mean the viral gardening headline “Place a Tablespoon on Any Plant at Home: What to Expect,” be cautious. The missing ingredient is important—there is no single tablespoon-sized substance that is safe or beneficial for every plant.
Common versions of this claim recommend things such as baking soda, sugar, coffee grounds, cinnamon, or other kitchen ingredients. Their effects vary considerably:
- Baking soda: Can raise soil pH and, in excess, damage roots or cause salt buildup.
- Sugar: Doesn’t act as a general fertilizer and can encourage unwanted microbial activity or pests.
- Coffee grounds: They contain organic matter and some nutrients, but fresh grounds can affect soil conditions; large amounts aren’t appropriate for every plant.
- Cinnamon: It may have some antifungal properties in certain situations, but sprinkling it on every plant isn’t a substitute for proper disease treatment.
- Fertilizer: A tablespoon might be appropriate for one plant and far too much for another, depending on the product and concentration.
The safer approach
Identify the plant species and the exact product/ingredient before applying anything. Different plants have very different requirements for soil pH, nutrients, moisture, and fertilizer.
If you send me the full headline or tell me what the “tablespoon” is supposed to contain, I can explain exactly what happens to the plant and whether the trick is actually safe.
