Dwarf Water Lily

nuphar pumila

Also known as: ["Dwarf Yellow Pond Lily","Small Yellow Water Lily"]

Family: Nymphaeaceae Genus: Nuphar Category: Flowers

Overview

A small aquatic plant with yellow flowers and rounded leaves that float on the water surface.

Benefits & Perks

["wildlife attractant (bees, butterflies, birds)","shade tolerant","aesthetic foliage"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Nymphaeales
Family: Nymphaeaceae
Genus: Nuphar
Botanical Name: Nuphar pumila

Plant Characteristics

Basic Information
  • Category: Flowers
  • Suitable Location: shallow water garden, pond, or container water garden
  • Suitable For:
    Outdoor Landscapers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"0–30°C"}
  • Hardiness: {"zones":"3–7"}
  • Misting: not required
  • Drainage: Moderately well-draining.
  • Soil Type: Rich, loamy soil with good organic matter content.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: As needed, typically in late winter or early spring before new growth emerges.
  • Pruning Intensity: Light pruning to remove dead or yellowing leaves.
Care Details

Ideal Sunlight Coverage:
Full sun to partial shade (4–6 hours of direct sunlight daily). Adjust for intense summer sun to prevent leaf scorch.

Sunlight Tolerance Tips:
Acclimate plants gradually to direct sunlight. Provide shade during peak afternoon hours in summer. For indoor placement, use a south-facing window with sheer curtains.

Warning Signs: Yellowing leaves, root rot, or stunted growth may indicate poor soil conditions or improper watering.

Care Requirements

Care Difficulty
moderate

moderate

Sunlight

full sun to partial shade

Rotate plant for even light exposure; use shade cloth in hot climates; avoid direct midday sun in summer.

Watering

constantly moist, never allowed to dry out

Water deeply to encourage root growth; allow soil to dry slightly between waterings; avoid waterlogging.

Soil

peaty, loamy, or clay-rich aquatic soil

pH: Slightly acidic to neutral (pH 6.0–7.0).

Ensure soil is consistently moist but not waterlogged; amend with organic matter for fertility; check pH periodically.

Temperature

Cool to moderate temperatures (60–75°F / 15–24°C). Prefers cooler conditions during dormancy.

Monitor temperature fluctuations; protect from frost; maintain consistent conditions during active growth.

Fertilizing

rarely required, once a year in spring if in a container

Dilute fertilizer to prevent burn; apply to moist soil; flush soil occasionally to prevent salt buildup.

Propagation

Methods

Division of rhizomes or seed propagation.

Step-by-Step Propagation Guide
  1. Divide rhizomes into sections with at least one bud.
  2. Plant seeds in a seed tray.
  3. Keep medium consistently moist.

Best Time: Early spring before active growth begins or after flowering in late summer.

Environment

Warm, humid conditions with indirect light. Maintain consistent moisture.

Medium

Moist, loamy soil with added perlite for aeration.

Hormone

Not typically required for rhizome division; optional for seeds to improve germination.

Timeline

Rhizome division: immediate establishment; seeds: 2–4 weeks for germination, several months to a year for establishment.

Tools Needed

Sharp knife, pruning shears, seed trays, rooting hormone (optional).

Quick Tips

Ensure rhizome sections have buds; use sterile tools to prevent disease; maintain high humidity for seeds.

Pruning & Repotting

Pruning Guide
Method

Snip off dead foliage at the base using clean, sharp tools.

Pruning Plan

Minimal pruning required. Focus on removing dead or damaged foliage to maintain plant health and appearance.

Tools

Pruning shears, scissors.

Checklist

Use clean tools; remove only dead/damaged parts; avoid over-pruning.

Repotting Guide
Best Season

Early spring before active growth begins.

Pot Size

Increase pot size by 2–3 inches in diameter.

Method

Gently remove the plant, trim any dead roots, place in a new pot with fresh soil, and water thoroughly.

Suggestions

Repot every 2–3 years or when the plant becomes root-bound. Necessary to refresh soil and provide space for growth.

Checklist

Choose appropriate pot size; use fresh soil mix; trim roots if necessary; water after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture before watering; water deeply; ensure proper drainage; adjust frequency with seasons.

How to Apply Water Properly

Water at the base of the plant, ensuring even moisture distribution. Water early in the day to minimize evaporation and allow foliage to dry. Ensure excess water drains away to prevent root rot.

Pro Tip: Use a watering can with a fine nozzle to avoid disturbing the soil or damaging delicate roots.
Watering Schedule Tips

Water consistently to maintain soil moisture, especially during active growth periods. Reduce watering slightly in winter dormancy.

Soil Improvement

Add compost or well-rotted manure to enhance fertility and structure. Incorporate perlite or sand for better drainage if needed.

Temperature Stress Management
Signs of Temperature Issues

Wilting, leaf discoloration (yellowing or browning), stunted growth, or bud drop.

Cold Stress

Low temperatures can slow growth or induce dormancy. Prolonged cold may damage roots or cause tissue injury.

Solution: Protect with a layer of mulch; move potted plants to a sheltered location; avoid overwatering in cold conditions.

Hot Stress

Excessive heat can lead to leaf scorch, wilting, and reduced vigor. High temperatures may stress the plant and inhibit flowering.

Solution: Provide shade during peak heat; increase humidity; water more frequently but avoid waterlogging.

Fertilizing Guide
Fertilizing Checklist

Use diluted fertilizer; apply during growing season; avoid winter feeding; flush soil periodically.

Fertilizing Method

Use a balanced, water-soluble fertilizer diluted to half strength. Apply every 4–6 weeks during the growing season (spring to early autumn). Avoid fertilizing in winter.

Common Problems & Solutions

Yellowing leaves in Nuphar pumila may indicate nutrient deficiencies, water stress, or disease, affecting overall plant health and photosynthetic capacity.

Wilting in Nuphar pumila can result from water stress, root damage, or pathogen infection, impairing water transport and potentially leading to plant death.

Leaf spots on Nuphar pumila are often caused by fungal or bacterial pathogens, leading to reduced photosynthesis and potential leaf loss.

Rotting, particularly root or stem rot, can occur in Nuphar pumila due to fungal infections or prolonged waterlogging, compromising structural integrity and nutrient uptake.

Toxicity Warning

Cats
Slightly Toxic

Cats may experience mild gastrointestinal symptoms if they ingest parts of Nuphar pumila. The toxic compounds can cause irritation to the digestive tract, though severe reactions are rare.

⚠️ Symptoms:
vomiting diarrhea loss of appetite
🌿 Toxic Parts:
roots rhizomes leaves
⚡ Toxic If:

if eaten

Prevent cats from accessing the plant. Seek veterinary care if ingestion is observed or suspected.
Dogs
Slightly Toxic

In dogs, ingestion of Nuphar pumila can lead to mild gastrointestinal upset due to the presence of nupharin. The effects are generally not life-threatening but can cause discomfort.

⚠️ Symptoms:
vomiting diarrhea lethargy
🌿 Toxic Parts:
roots rhizomes leaves
⚡ Toxic If:

if eaten

Keep pets away from the plant. If ingestion is suspected, contact a veterinarian for guidance.
Humans
Slightly Toxic

Nuphar pumila contains toxic compounds, primarily nupharin, which can cause mild to moderate gastrointestinal distress upon ingestion. The plant's physiological impact is primarily localized to the digestive system, with minimal systemic effects.

⚠️ Symptoms:
nausea vomiting diarrhea abdominal pain
🌿 Toxic Parts:
roots rhizomes leaves
⚡ Toxic If:

if eaten

Avoid consumption of any part of the plant. Wash hands thoroughly after handling to prevent accidental ingestion.
Important: Keep this plant out of reach of children and pets. If ingestion occurs, contact poison control or veterinary services immediately.

Frequently Asked Questions

Q: How deep should the water be for Nuphar pumila?

A: It thrives in water depths of 6-18 inches.

Q: Does it require full sun?

A: Yes, it prefers full sun to partial shade for optimal flowering.

Q: Is it invasive?

A: Generally not invasive, but it can spread in suitable conditions.

Quick Reference
Family: Nymphaeaceae
Care: moderate
Light: full sun to partial shade
Water: constantly moist, never allowe
Suitable For: ["outdoor landscapers","wildlife supporters (attracts bees, butterflies, birds)"]
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