Yes, Plumeria can thrive in sandy soil, provided certain conditions are met. Sandy soil offers good drainage, which is essential for Plumeria, as these plants are susceptible to root rot when exposed to waterlogged conditions. However, sandy soil also has some limitations that you should be aware of when growing Plumeria.

Advantages of Sandy Soil:

1. Excellent Drainage: Sandy soil drains water well, reducing the risk of root rot.
2. Ease of Root Penetration: The loose texture of sandy soil makes it easier for Plumeria roots to expand.

Limitations of Sandy Soil:

1. Low Nutrient Retention: Sandy soil doesn’t hold onto nutrients well. This can be a drawback, as Plumeria need a good balance of nutrients to flourish.
2. Frequent Watering Required: Sandy soil dries out quickly, so more frequent watering might be necessary, especially during hot and dry periods.

Tips for Growing Plumeria in Sandy Soil:

1. Amend the Soil: Improve the nutrient content and water retention capabilities by adding organic matter like compost or well-rotted manure to the sandy soil.
2. Fertilize Regularly: Because sandy soil is poor in nutrients, regular fertilization is key. Use a balanced, slow-release fertilizer with high phosphorus content for better blooms.
3. Check Soil pH: Plumeria prefers a slightly acidic to neutral pH range (6-7). You might need to adjust the pH level if your sandy soil is too alkaline or too acidic.
4. Mulching: Apply a layer of organic mulch around the base of the plant to help retain moisture and add nutrients to the soil.
5. Regular Monitoring: Keep an eye on water levels and nutrient status. Sandy soils require careful management to ensure the plant remains healthy.
6. Pest and Disease Management: Good drainage reduces the risk of root rot, but regular monitoring for pests like spider mites and aphids is still necessary.

Expert Resources:

For additional insights tailored to growing Plumeria in sandy soil conditions, you can refer to PlumeriaCareGuide.com.

In summary, while sandy soil provides good drainage, which is crucial for Plumeria, it falls short in nutrient retention and water-holding capacity. You can mitigate these drawbacks by amending the soil and providing regular fertilization and watering, thereby creating an environment in which your Plumeria can thrive.