Plants
Grass-leaved bladderwort
Utricularia graminifolia
ModerateFine in a closed jar
A grassy carpet whose roots carry tiny traps. Wants a wet, acid bog.
What the simulation uses
- Light
- 4,000 to 20,000 lux
- The brightness it grows well in.
- Humidity
- 80 to 100 % RH
- Air moisture it is happy in; below the lower end it dries out.
- Temperature
- 18 to 28 °C
- Comfortable range; outside it growth slows.
- Dies at
- below 10 or above 32 °C
- Days beyond these temperatures kill it.
- Soil pH
- 4.5 to 6 pH
- Soil acidity it prefers.
- Grows up
- 1 cm/month
- How fast it gains height in good conditions.
- Spreads
- 4 cm/month
- How fast its edge creeps outwards.
- Thickens
- 15 %/month
- How fast its cover fills in on its own ground.
- Copes with wet
- excellent
- How well it stands soggy soil; poor means rot comes quickly.
- Copes with still air
- good
- Sealed jars have still air; poor means grey mould finds it.
- Copes with shade
- fair
- How well it holds on in dim light.
- Copes with drying
- poor
- How well it survives the jar drying out.
- Water use
- 0.09 ml/cm²/day
- Water drawn up from its roots per cm² of leaves in room air; a sealed jar cuts this to a fraction and returns it down the glass.
- Leaf drop
- 3 %/month
- Share of its leaves it sheds each month as litter for the cleanup crew.
- Soft leaves
- yes
- Soft new growth that hungry isopods will nibble.
- Full size
- 2.5 cm tall, 40 cm wide
- Its size when grown, before the lid stops it.
Care
- Day length
- 10 to 14 h
- Substrate
- Wet
What kills it
- drying out
- fertiliser or hard tap water (mineral buildup)
- low light collapse
Description
Tiny bladders on its roots trap microscopic creatures living in the wet soil. Give it a soaked, acidic, nutrient-poor bog. It grows equally well underwater or in very humid air.
Also called ug, bladderwort.
Estimated, where sources were thin: no species-level lux or temperature study found; ranges from carnivorous-plant and aquascape guides.