Utricularia longifolia Caresheet
Common Name: Long-leaved Bladderwort
Type: Carnivorous, aquatic/semi-aquatic
Overview
Utricularia longifolia is a terrestrial carnivorous plant that thrives in moist, nutrient-poor environments. Known for its vibrant green foliage and stunning violet flowers with intricate veining, it is an excellent choice for use as a ground cover in carnivorous plant setups or as part of a terrarium display. This species spreads quickly, forming lush carpets of foliage while producing its signature bladder traps below the soil surface.
Ideal Growing Conditions
Lighting
Bright, indirect light: 10–12 hours of light daily for optimal growth.
Artificial lighting: Use full-spectrum LED or fluorescent grow lights with a PAR range of 400–700 nm if natural light is insufficient.
Temperature
Prefers temperatures between 18–28°C (65–82°F).
Avoid exposure to frost or prolonged heat above 32°C (90°F).
Humidity
Requires high humidity levels (70–90%).
Ensure good airflow to prevent mold or fungal issues in enclosed terrariums.
Substrate
Use a mix of peat moss and sand or long-fiber sphagnum moss.
Avoid nutrient-rich soils as the plant relies on its carnivorous bladders for sustenance.
Watering
Keep the substrate consistently wet but not waterlogged.
Use pure water: rainwater, distilled water, or reverse osmosis (RO) water.
Planting and Maintenance
Planting as Ground Cover
Spread small plugs of Utricularia longifolia evenly over the substrate.
Allow gaps for natural spread as the plant will quickly form a dense mat.
Avoid burying the foliage; only the roots and bladders need to contact the substrate.
In Terrariums
Position Utricularia longifolia around base plants or near water features.
Pair with other carnivorous plants like Drosera or Pinguicula for visual interest.
Fertilizing
Fertilization is generally unnecessary, but occasional feeding with tiny aquatic invertebrates (like daphnia) in waterlogged areas may boost growth.
Pruning
Trim back excessive growth to prevent overcompetition with neighboring plants.
Remove dead or decayed leaves to maintain a tidy appearance.
Flowering
Produces tall flower spikes with violet flowers featuring a white center.
Ensure consistent lighting and proper care to encourage blooming.
Benefits as Ground Cover
Suppresses algae and moss growth in carnivorous plant setups.
Keeps the substrate moist by retaining water.
Enhances visual appeal with its bright green foliage and occasional flowers.
Companion Plants
Pairs well with Drosera, Nepenthes, and Pinguicula.
Avoid overly competitive species that may overgrow Utricularia longifolia.
With proper care, Utricularia longifolia can thrive as a vibrant and functional element in carnivorous plant collections or terrarium landscapes.