How to Grow Colorado Water Lily
Colorado Water Lily
Nymphaea tetragona subsp. angusta
flowerColorado Water Lily is a miniature hardy water lily native to high-altitude alpine lakes and ponds in the Rocky Mountains. It produces delicate white or pale pink flowers that bloom above or just at the water surface, with round floating leaves. This compact aquatic perennial is ideal for small ponds, water gardens, and containers.
When should you plant Colorado Water Lily in your zone?
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Example Colorado Water Lily timeline · Pittsburgh, PA (Zone 6b)
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Plant Colorado Water Lily
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Colorado Water Lily blooms
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Colorado Water Lily dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8; extremely cold-hardy due to alpine origins
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Dormancy/Planting
1-2 weeks after plantingRhizomes are dormant with minimal visible growth; planted in early spring as water warms
Plant as soon as water temperature reaches 50°F; ensure rhizome is positioned horizontally with growing tip slightly exposed
Sprouting
2-3 weeksFirst leaves emerge from the rhizome and develop underwater; small shoots elongate toward the surface
Maintain consistent water temperature; ensure adequate light penetration; avoid disturbing the planting area
Vegetative Growth
4-8 weeksFloating leaves expand and spread across the water surface; plant develops a stronger root system; multiple leaf pads form
Monitor for fertilizer needs; thin crowded leaves to allow light penetration; watch for pests; maintain water level
Flowering
6-12 weeks (June-September in northern zones)Buds emerge on elongated peduncles and break the water surface; delicate white or pale pink flowers open, typically with 8 petals; blooms may float or slightly rise above water
Flowers last 3-4 days and open in morning; ensure continuous fertilization; maintain consistent water depth; flowers are followed by seed development
Senescence/Winter Dormancy
6-8 weeks (September-October); dormancy through winterFoliage yellows and declines; plant withdraws energy to rhizome; rhizome hardens for winter survival in cold climates
Remove dead foliage to prevent water quality degradation; cease fertilizing; in extreme cold zones, consider bringing containers indoors or ensuring pond doesn't freeze solid
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove affected leaves; submerge foliage underwater for 24-48 hours if beetle damage is visible; introduce natural predators like dragonfly nymphs
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Spray undersides of leaves with strong water stream; remove heavily infested leaves; introduce aquatic insect predators
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Remove affected leaves promptly; ensure good water circulation; avoid overfeeding nitrogen; maintain water quality
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Improve drainage and aeration; ensure rhizome crown is not submerged under thick silt; remove and replace infected plants if necessary
Uses
Decorative water garden ingredient
CulinaryWhile not commonly eaten, water lily flowers are used as decorative elements in gourmet cuisine and high-end cocktails. The flowers add aesthetic appeal to aquatic-themed culinary presentations. [source]
Traditional herbal preparation
MedicinalWater lily has been used in traditional herbalism as a mild sedative and for reducing inflammation. Root extracts have been studied for various health properties in some cultures. [source]
Water garden centerpiece
HouseholdColorado Water Lily is the primary ornamental plant for small ponds, container gardens, and water features. Its compact size and hardy nature make it ideal for creating focal points in landscape water gardens. [source]
Botanical art and preservation
CraftThe delicate flowers and striking round leaves are popular subjects for pressing, botanical illustration, and photography. Pressed flowers can be used in crafts and floral arrangements. [source]
Pollinator and ecosystem support
WildlifeWater lilies attract dragonflies, aquatic insects, and pollinators to garden ponds. The leaves provide shelter for aquatic fauna, and flowers support bee populations, creating a healthy aquatic ecosystem. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Flowers are not typically harvested for cutting as they are delicate and short-lived; instead, enjoy them blooming on the water. Seed pods can be harvested when they turn brown and sink; collect seeds for propagation. Remove spent flowers and dead leaves to maintain plant vigor and water quality.
Fun Facts
- 🌱 Colorado Water Lily is one of the smallest hardy water lily species, typically producing leaves only 1-2 inches across, making it perfect for container water gardens where larger lilies would overwhelm the space.
- 🌱 This species has remarkable cold tolerance due to its alpine origins; its rhizomes can survive complete pond freezing and emerge each spring, thriving in the Rocky Mountain climate where it naturally occurs.
- 🌱 Water lily flowers have a unique behavior of opening and closing daily; blooms typically open in early morning and close by afternoon, allowing them to last several days despite appearing to bloom only once.
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