Yellow Waterlily/Nymphaea Mexicana

Yellow Waterlily (Nymphaea mexicana) is a striking aquatic flowering plant known for its bright yellow star-shaped blooms and floating green lily pads. It is popular in ornamental ponds, terrace water gardens, and aquarium tubs.

Light

• Requires full sun for best flowering.
• Minimum 5–6 hours of direct sunlight daily.
• More sunlight encourages larger blooms and compact growth.

Water Conditions

• Grows best in calm freshwater ponds or containers.
• Ideal water temperature: 22–32°C.
• Suitable for tropical climates like Kochi.

Planting Medium

Use heavy aquatic soil:

• Clay-rich garden soil
• Aquatic plant soil
• Avoid loose potting mixes that float in water.

Top with gravel or sand to prevent soil disturbance.

Water Depth

• Ideal depth: 15–45 cm above the crown depending on plant size.
• Young plants prefer shallower water initially.

Fertilizer

• Use aquatic plant fertilizer tablets every 4–6 weeks during active growth.

Growth Habit

• Spreading aquatic plant with floating leaves.
• Produces underground tubers and runners.
• Can spread rapidly under warm conditions.

Flowering

• Bright yellow fragrant flowers.
• Blooms mainly during warm sunny months.
• Flowers often open during daytime and close by evening.

Common Problems

Few or no flowers

• Usually insufficient sunlight or lack of nutrients.

Yellowing leaves

• Nutrient deficiency or overcrowding.

Rotting tubers

• Poor water quality or overly deep planting.

Algae growth

• Excess nutrients and stagnant water can encourage algae.

Propagation

• Easily propagated from tubers, runners, or division.
• Fast multiplication under warm tropical conditions.

Suitable Uses

• Outdoor ponds
• Lotus tubs
• Terrace water gardens
• Natural-style aquatic landscaping
• Large aquarium ponds