Glass Jar Garden

Plants

Flask-shaped pitcher plant as drawn in the simulator

Flask-shaped pitcher plant

Nepenthes ampullaria

ModerateClosed jar only

Round little pitchers carpeting the ground. Likes shade and warmth.

What the simulation uses

Light
3,000 to 15,000 lux
The brightness it grows well in.
Humidity
70 to 95 % RH
Air moisture it is happy in; below the lower end it dries out.
Temperature
21 to 35 °C
Comfortable range; outside it growth slows.
Dies at
below 12 or above 38 °C
Days beyond these temperatures kill it.
Soil pH
4 to 5.5 pH
Soil acidity it prefers.
Grows up
1.75 cm/month
How fast it gains height in good conditions.
Spreads
1.25 cm/month
How fast its edge creeps outwards.
Copes with wet
fair
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
good
How well it holds on in dim light.
Copes with drying
poor
How well it survives the jar drying out.
Water use
0.07 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
37.5 cm tall, 40 cm wide
Its size when grown, before the lid stops it.

Care

Day length
12 to 13 h
Substrate
Moist

What kills it

Description

On lowland forest floors this pitcher plant forms carpets of small pitchers, each under 10 cm, that catch falling leaves. It wants warmth and constantly high humidity. A large closed tank suits it best.

Also called tropical pitcher plant.

Estimated, where sources were thin: light_lux; temp_lethal_c; growth rates; mature_size_cm; ph.

Sources

Grow it in a jar