Photo: Thomas MesaglioCC BY 4.0via iNaturalistresized / cropped
Blue Lotus Plant Care
Nymphaea caerulea Savigny
Updated · Sources · How we source care data
This aquatic plant is known for its striking blue color, which sets it apart from other water lilies. Originating from Egypt, Nymphaea caerulea attracts plant collectors with its historical significance as a sacred symbol in ancient Egyptian culture, making it a unique and coveted addition to any water garden.
Every 3–5 days
Full sun to partial shade
65–85°F
70–80%
At a glance
How do you care for Blue Lotus?
Water Blue Lotus every 3–5 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 65–85°F (18–29°C) and 70–80% humidity. Fertilize it every month during the growing season.
What Is the Blue Lotus?
Blue Lotus (Nymphaea caerulea) belongs to the Nymphaeaceae family within the Nymphaea genus. Blue Lotus is native to Egypt, Sudan. Blue Lotus is also known as Blue Water Lily, Egyptian Water Lily, Water Lily.
Blue Lotus displays a floating aquatic plant growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Blue Lotus produces showy, fragrant, solitary flowers in various colors.
How Often Should You Water a Blue Lotus?
Nymphaea caerulea requires watering every 3–5 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 3–5 days
Let soil partially dry between waterings
What Light Does the Blue Lotus Need?
Blue Lotus thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Blue Lotus Prefer?
Nymphaea caerulea grows best at temperatures of 65–85°F. Blue Lotus prefers humidity levels of 70–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–85°F
Humidity
70–80%
What Soil Mix Works Best for a Blue Lotus?
Rich loamy soil with a layer of clay and organic matter, aquatic planting media. Good drainage is essential for Blue Lotus to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Blue Lotus?
Feed Blue Lotus every month during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Blue Lotus?
Repot every 1-2 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Blue Lotus?
Blue Lotus can be propagated through division of rhizomes, seeds.
Is the Blue Lotus Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Blue Lotus, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Blue Lotus?
Blue Lotus is susceptible to aphids, leaf miners, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Blue Lotus Need?
Blue Lotus grows outdoors in USDA Zone 10b – 13b. It survives winters down to planting zone 10b. Blue Lotus is native to Egypt, Sudan. In cooler regions, grow Blue Lotus as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 10b – 13b
Keep exploring plants
Blue Lotus is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Nymphaea genus — compare its care with other Nymphaea species on PlantoScan.
Nymphaea is part of the Nymphaeaceae plant family — browse all Nymphaeaceae genera and species.
Blue Lotus thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Nymphaea caerulea Savigny, family Nymphaeaceae (first published in Déc. Egypt. 1: 71 (1798)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Blue Lotus, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Thomas Mesaglio, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 10b – 13b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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