While cream of tartar isn't a widely recognized or studied plant fertilizer, anecdotal evidence suggests it can offer certain benefits, especially for addressing specific issues.
Cream of tartar, chemically potassium bitartrate, is a byproduct of winemaking. Its potential uses in the garden are primarily focused on addressing specific nutrient deficiencies or pest control rather than acting as a complete fertilizer.
Potential Benefits of Cream of Tartar for Plants:
-
Boosting Soil pH: Cream of tartar is slightly acidic. Adding it to alkaline soil can help lower the pH, making nutrients more accessible to plants that prefer acidic conditions (e.g., blueberries, azaleas). However, caution is crucial as excessive use can harm other plants. A soil test is recommended before application.
-
Pest Deterrent: Some gardeners report that cream of tartar, when mixed with water and sprayed on plants, can act as a deterrent against certain pests. The mechanism behind this is not well-researched, but it might be due to the acidic nature of the solution or other properties of potassium bitartrate. The reference you provided simply states it helps with problems that come with cultivating plants.
-
Potassium Source: As potassium bitartrate, cream of tartar provides a source of potassium, an essential macronutrient for plant growth. Potassium is involved in various plant processes, including water regulation, nutrient uptake, and disease resistance. However, the amount of potassium available in cream of tartar is relatively low compared to dedicated potassium fertilizers.
How to Use Cream of Tartar for Plants:
-
Soil Amendment (pH Adjustment): Dissolve a small amount of cream of tartar in water (e.g., 1 teaspoon per gallon) and apply it to the soil around acid-loving plants. Monitor soil pH regularly to avoid over-acidifying the soil.
-
Pest Deterrent Spray: Mix a small amount of cream of tartar with water and spray it on plant foliage. Start with a diluted solution to avoid leaf burn. Test on a small area first.
Important Considerations:
-
Soil Testing: Always conduct a soil test before amending the soil with cream of tartar or any other substance. This will help determine the soil's pH and nutrient levels, preventing imbalances.
-
Dilution: Cream of tartar should always be diluted with water before applying it to plants to avoid damaging them.
-
Limited Research: The use of cream of tartar in gardening is based largely on anecdotal evidence. More research is needed to fully understand its effects on plants.
-
Alternative Solutions: For addressing potassium deficiencies or adjusting soil pH, consider using commercially available fertilizers and soil amendments specifically designed for these purposes. These products offer more consistent and predictable results.
In conclusion, while cream of tartar may offer some benefits for plants, it should be used cautiously and with an understanding of its potential effects. It's best viewed as a supplemental remedy rather than a primary fertilizer.
