Why is My Dolphin Plant Turning Yellow?
Your dolphin plant is likely turning yellow primarily due to overwatering, which is a common issue for this type of succulent.
The Main Culprit: Overwatering
Based on the information provided, overwatering is a classic rookie mistake when caring for plants like the String of Dolphins. While you might think you are showing your plant love with plenty of water, you could actually be "suffocating" it.
Here's the breakdown of why too much water causes yellowing:
- Root Anoxia: Plant roots need oxygen to survive. When the soil is constantly waterlogged from overwatering, it pushes out the air, preventing oxygen from reaching the roots. This creates a condition known as root anoxia.
- Nutrient Absorption Hindrance: A waterlogged soil scenario hampers the roots' ability to properly absorb essential nutrients from the soil.
- Lack of Nutrients = Yellow Leaves: When the plant cannot get the nutrients it needs because its roots are struggling due to lack of oxygen and excessive water, its leaves can start to show distress, often by turning yellow.
In essence, the plant isn't getting the air and food it needs because the roots are drowning.
Recognizing Overwatering Symptoms
Besides yellowing leaves, signs of overwatering can include:
- Mushy or soft leaves
- Drooping appearance
- Foul smell from the soil
- Mold growth on the soil surface
How to Prevent Overwatering
To avoid yellowing caused by overwatering, focus on proper watering practices:
- Check Soil Moisture: Water only when the soil is dry several inches down. You can use your finger or a moisture meter.
- Use Well-Draining Soil: Ensure your plant is potted in a succulent or cactus mix that allows water to flow through easily.
- Pot with Drainage Holes: Always use a pot with drainage holes at the bottom so excess water can escape.
- Water Thoroughly, Then Let Dry: When you do water, water deeply until water runs out the bottom. Then, allow the soil to dry out completely before watering again.
Summary Table: Overwatering Impact
| Cause | Effect on Roots | Nutrient Uptake | Visible Symptom |
|---|---|---|---|
| Overwatering | Root Anoxia (Lack of O₂) | Hindered | Yellow Leaves |
By adjusting your watering routine, you can help your dolphin plant recover and maintain its vibrant green color.
