True Blue Butterwort (Pinguicula agnata ‘True Blue’)

True Blue Butterwort

Pinguicula agnata ‘True Blue’

Its vivid blue blooms contrast with sticky carnivorous leaves, a delicate insect-trapping beauty. Herbaceous perennial carnivorous plant; common name: True Blue Butterwort.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect sunlight with gentle morning direct sun; avoid intense midday summer sun to prevent leaf scorch
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Watering Keep soil consistently moist but not waterlogged; use distilled, rainwater, or dechlorinated tap water to avoid mineral buildup on leaves
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Temperature Thrives in cool to temperate conditions; avoid prolonged exposure to temperatures below 8°C or above 30°C
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Characteristics

  • Leaf: Fleshy, pale green basal rosette leaves coated in clear, sticky mucilage to trap small insects
  • Flower: Vibrant true blue, five-petaled blooms on slender 10–15 cm upright stalks
  • Stem: Short, non-woody basal stems that produce new rosette offsets over time
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Care Guide

Watering

Maintain steady soil moisture; mist leaves occasionally to support mucilage production

Fertilization

No fertilizer required; nutrients are obtained from trapped insects. Fertilizer can damage sensitive roots and disrupt carnivorous function

Dechlorinated aquarium water:Dilute 1:1 with rainwater before applying to avoid nutrient overload; pour directly onto soil to prevent leaf contamination
Pruning
  • Remove dead, browned leaves from the rosette base to improve airflow
  • Trim spent flower stalks after blooming to redirect energy to new rosette growth
  • Thin overcrowded offsets during spring repotting to prevent competition for resources
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported adverse health effects

Humans: No known toxic effects on humans; safe for handling and accidental ingestion in small amounts

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental carnivorous plant for terrariums, bog gardens, and windowsill displays