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Bladderwort (Utricularia) Care Guide

Bladderworts, or Utricularia, are some of the most fascinating carnivorous plants in the world. Instead of visible traps, they use tiny underwater bladders to capture microscopic prey.

Many species grow as small leafy mats and produce beautiful orchid-like flowers, making them surprisingly attractive plants for both beginners and experienced growers.

Best of all, they are often one of the easiest carnivorous plants to grow.

Light Requirements

The MOST Important Part!

Bladderworts prefer bright light to partial sun.

Most species grow very well on a bright windowsill, receiving several hours of gentle sunlight each day.

They can also be grown outdoors in bright dappled light.

Too much intense midday sun may dry the soil too quickly, so bright filtered light is often ideal.

Acclimatization

Adjusting to their New Home.

Bladderworts generally adapt very easily to new environments.

Because they grow as spreading mats, they often begin growing quickly once settled.

When your plant arrives, place it in bright indirect light for about a week, then gradually move it to its final growing position.

A light spray of Novion can also help reduce stress and encourage healthy growth.

Novion can be purchased off the Accessories Page.

Watering Requirements

PURE is PERFECT.

Always use PURE water such as Rainwater, Distilled Water, or Reverse Osmosis (R.O.) Water.

Bladderworts enjoy consistently wet soil and are usually grown using the tray method.

Keep the pot sitting in 1–2 cm of water at all times.

Unlike some other carnivorous plants, Bladderworts generally do not mind constant moisture and often grow very happily in consistently wet conditions.

Never allow the soil to dry out.

Soil Requirements

Poor Soil Makes Happy Plants.

Bladderworts grow well in nutrient-poor carnivorous plant soil.

A simple mix works perfectly:
• 1 part peat moss
• 2 parts perlite

Some species can also be grown in long-fiber sphagnum moss.

Because they spread across the surface of the soil, shallow pots or trays work well.

Carnivorous soil mixes suitable for Bladderworts can be purchased off the Accessories Page.

Feeding Requirements

If you Absolutely Cannot Resist!

Bladderworts capture microscopic organisms and tiny insects using their tiny bladder traps.

Because of this, they almost never need additional feeding.

In most cases, simply providing good light and clean water will allow them to thrive.

If desired, a very light foliar spray of Novion can help encourage healthy growth.

Pest Control

Never Fear. Help is Near.

Bladderworts are generally very pest resistant.

Occasionally, aphids may appear on flower stalks, but this is uncommon.

If pests do appear, a mild insecticide such as Rosecare Plus by Efekto can be used.

Temperature Tolerance

To Chill or Not to Chill.

Most commonly grown Bladderwort species tolerate a wide range of temperatures.

They grow well between:

10°C and 30°C

They should be protected from frost and freezing temperatures at all times.

Winter Dormancy

The Big Snooze.

Many tropical Bladderwort species do not require winter dormancy and will grow year-round in stable conditions.

Growth may slow slightly during colder months, but the plant will quickly resume growth once temperatures rise again.

Simply maintain normal watering and light levels throughout winter.

Refer to my blog for more info on Winter Snoozes.