How to Grow Large-flowered Butterwort
iNaturalist
Large-flowered Butterwort
Pinguicula grandiflora
flowerPinguicula grandiflora is a carnivorous plant native to southwestern Europe, characterized by rosettes of sticky, glandular leaves that trap small insects. It produces striking violet or purple flowers on delicate stems during the growing season. This temperate butterwort is prized by plant collectors for its fascinating insect-trapping ability and beautiful blooms.
When should you plant Large-flowered Butterwort in your zone?
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Example Large-flowered Butterwort timeline · Pittsburgh, PA (Zone 6b)
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Plant Large-flowered Butterwort
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 Large-flowered Butterwort blooms
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Large-flowered Butterwort dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 8-10; can be grown as a houseplant in cooler regions
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Get my Large-flowered Butterwort timeline →Growth Stages
Dormancy/Rest
3-4 months (typically Nov-Feb in Northern Hemisphere)Plant forms compact rosette; growth slows or halts in winter (temperate climate adaptation)
Reduce watering slightly; maintain cool temperatures (50-60°F); provide bright light; no fertilizer
Active Growth
6-8 weeksRosette expands with glossy, sticky leaves; new leaf production accelerates; plant prepares for flowering
Maintain consistent moisture; ensure bright, filtered light; keep humidity high; do not fertilize
Flowering
4-6 weeks (spring to early summer)Delicate flower stems emerge from center of rosette; violet to deep purple blooms with 5 petals appear
Continue moist conditions; provide bright light to support blooms; avoid touching flower stems; flowers attract insects naturally
Seed Development
3-4 weeksFlowers fade; seed capsules form at base of flower stems; new leaves continue developing
Allow seeds to mature on plant if self-pollination occurred; do not remove seed capsules prematurely
Post-Flowering Maintenance
2-3 monthsPlant enters secondary growth phase; rosette consolidates; gradually transitioning toward dormancy
Remove spent flower stems; maintain moisture and light; prepare for cooler season; no pruning of leaves needed
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Reduce soil moisture slightly; improve air circulation; use yellow sticky traps; avoid overwatering; the plant's natural insect-trapping ability provides some control
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Increase humidity; mist with distilled water; isolate infected plants; avoid harsh miticides that damage delicate leaves
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Inspect regularly; remove by hand with cotton swab; isolate from other plants; avoid systemic insecticides
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Ensure excellent drainage; use sterile soil; water with distilled water; do not allow standing water; repot into fresh soil if rot occurs
Uses
Natural Insect Control
HouseholdThe sticky leaves naturally trap and digest small flying insects including gnats, fruit flies, and mosquitoes, making it an effective biological pest management tool for indoor spaces. [source]
Collector's Specimen Plant
CraftPinguicula grandiflora is highly valued by carnivorous plant enthusiasts and collectors as a showpiece plant that demonstrates fascinating botanical adaptations and produces beautiful purple flowers. [source]
Pollinator Attraction
WildlifeThe violet flowers attract bees, butterflies, and other pollinators while the sticky leaves trap smaller insects, supporting biodiversity in indoor and outdoor gardens. [source]
Traditional European Herbalism
MedicinalHistorically, Pinguicula species have been used in folk medicine in Spain and France as digestive aids and for respiratory conditions, though modern scientific evidence is limited. [source]
Culinary Curdling Agent
CulinaryTraditionally used in Scandinavia and Northern Europe to curdle milk for cheese-making, particularly in traditional recipes, as the sticky leaves contain proteolytic enzymes. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
This is an ornamental/insectivorous plant, not harvested for food. For seed collection: allow flowers to be pollinated naturally or hand-pollinate with a fine brush; collect mature seed capsules when they turn brown and dry; sow seeds immediately on moist peat moss surface in spring without covering; seeds require cold stratification and bright light to germinate.
Fun Facts
- 🌱 Pinguicula grandiflora's name derives from the Latin 'pinguis' meaning 'fat' or 'oily,' referring to the greasy appearance of its sticky, enzyme-secreting leaves that can digest protein-rich insects.
- 🌱 The plant's sticky secretion is produced by specialized glandular cells and contains digestive enzymes similar to those found in the mammalian stomach, allowing it to obtain nitrogen in nutrient-poor soils.
- 🌱 Unlike Venus flytraps that require dormancy, Pinguicula grandiflora from southwestern Europe is a temperate species that goes dormant in winter, making it easier to cultivate long-term than tropical butterworts.
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