The leaves on your lava rock plant might be turning yellow because they are touching the lava rock and beginning to mold.
Here's a breakdown of why this happens and what you can do:
Potential Cause: Moisture and Contact with Lava Rock
- Moisture Retention: Lava rock, while beneficial for drainage, can sometimes retain moisture, especially if the environment is humid.
- Direct Contact: When leaves rest directly on the damp lava rock, they're exposed to this moisture for extended periods.
- Mold and Rot: This constant exposure can create a breeding ground for mold or cause the leaves to rot, leading to yellowing.
Solution: Prevent Leaf Contact
The most direct solution is to prevent the plant's leaves from touching the lava rock. Here's how:
- Pruning: Carefully trim any leaves that are consistently touching the rock.
- Repositioning: Gently reposition the plant so that the leaves are not drooping onto the lava rock. You may need to adjust the positioning as the plant grows.
- Staking/Support: If necessary, use small stakes or plant supports to gently lift the leaves away from the rock.
Other Possible Causes (Less Likely, but Still Possible)
While contact with the lava rock is the most probable cause based on the provided information, consider these other factors:
- Overwatering: Although lava rock provides good drainage, overwatering can still lead to root rot, which can manifest as yellowing leaves. Ensure proper watering practices.
- Nutrient Deficiency: A lack of essential nutrients can sometimes cause yellowing. However, this is less likely if the plant is newly planted in good quality soil or regularly fertilized.
- Pest Infestation: Inspect the plant for any signs of pests, although pests are less common with lava rock plants.
By preventing the leaves from touching the lava rock, you can often resolve the yellowing issue. Monitor the plant closely after making these adjustments to ensure its health improves.
