The blue Nangkwag water lily is a beautiful aquatic plant commonly known as:

Nymphaea nouchali (also called blue lotus in some regions)

Sometimes linked culturally to Nymphaea caerulea, though they are different species

🌸 What “Nangkwag” refers to

“Nangkwag” is often a local or nursery trade name (especially in parts of Southeast Asia) for a blue-flowering water lily variety, not a formally recognized botanical classification. Sellers may use it to describe a deep blue or violet ornamental cultivar.

🌿 Key Features

Flower color: Blue to bluish-purple

Leaves: Round, floating, green (sometimes with reddish underside)

Blooming: Day-blooming (flowers open in sunlight)

Fragrance: Mild to pleasant

Habitat: Ponds, containers, slow-moving water

🌱 Growing Tips (especially for India/Chennai climate)

Sunlight: Full sun (at least 5–7 hours daily)

Water depth: 20–40 cm above the pot

Soil: Heavy clay soil (avoid loose potting mix)

Temperature: Thrives in warm tropical climates like Chennai

Fertilizer: Aquatic plant tablets every 3–4 weeks

🪷 Care Notes

Keep in still water (no strong fountains directly on it)

Remove dead leaves regularly

Watch for pests like aphids

Repot every 1–2 years as it spreads