What are white spots on a plumeria cutting when trying to root in water

White spots on a plumeria cutting when rooting it in water can have various causes. Here are some common reasons for white spots on plumeria cuttings:

1. Mineral Deposits: Like other plants, plumerias can develop white spots due to mineral deposits in the water. If the water you’re using is high in minerals, such as calcium or magnesium, these can accumulate on the cutting’s surface as the water evaporates, leaving behind white spots.
2. Fungal Growth: Fungi can develop on the plumeria cutting, leading to white spots. This is more likely to occur if the cutting is not kept clean and sterile or if the water becomes stagnant. Fungal growth can be detrimental to the rooting process.
3. Bacterial Infection: White spots might also indicate a bacterial infection on the plumeria cutting. Bacteria can thrive in water, especially if it’s not changed regularly or if the cutting has wounds or damage that allow entry points for infection.
4. Mineral Leaching from the Cutting: Sometimes, the white spots may not be on the surface but rather a result of minerals leaching from the plumeria cutting itself. This can happen if the cutting releases natural substances during the rooting process.

To address white spots on plumeria cuttings and promote successful rooting:

• Use distilled or purified water to reduce the risk of mineral deposits.
• Keep the container and tools clean and sterilized.
• Change the water regularly to maintain a clean environment.
• Ensure the plumeria cutting is healthy and free from disease or damage before rooting it.
• Consider using a rooting hormone to encourage root development and reduce the risk of fungal or bacterial issues.

If the white spots persist or worsen, closely inspect the cutting for any signs of fungal or bacterial growth. If a fungal or bacterial infection is suspected, you may need to treat the cutting with an appropriate fungicide or bactericide to prevent further damage.