Nepenthes ampullaria Jack

Flask-Shaped Pitcher Plant, Common Swamp Pitcher Plant

Moderate careTerrestrialNon-toxic10100 cm

Nepenthes ampullaria is a tropical pitcher plant from the lowland rainforests of Borneo, Sumatra, Peninsular Malaysia, Thailand, Singapore, and New Guinea, where it sprawls across the shaded forest floor in dense colonies of small, urn-shaped traps. Its pitchers are short and squat — rarely more than ten centimetres tall — and clustered low to the ground in 'carpets' fed by underground runners, so a single plant can produce dozens of traps at once. What makes this Nepenthes unusual is that it has largely abandoned hunting for living prey: it feeds mainly on dead leaves and other plant debris that fall into its open pitchers, drawing roughly a third to nearly half of its nitrogen from leaf litter rather than insects. It does well in a warm, humid closed terrarium with bright indirect light, and is one of the easier Nepenthes species for beginners.

Build a terrarium with this plant
Flask-Shaped Pitcher Plant image

Photo by eyrezer·CC BY 4.0

Care

Prefers very high humidity, indirect light, with 18–32 °C, and reaches 100 cm at maturity.

Light

Indirect light(preferred)Bright indirect

Humidity

Very high (80%+)(preferred)High (60–80%)

Temperature

10°C25°C40°C
18°C32°C

Soil

Sphagnum mix(preferred)Peat mossOrchid mix

Moisture

Moist(preferred)Wet

Soil pH

4.5 – 6

Propagation

Mature plants spread by underground runners and produce side rosettes that can be separated once they have their own roots. Lift carefully, sever the runner with a clean cut, and pot the new rosette into the same wet sphagnum-based mix. Keep humidity high while it settles.

Native range

Native to Indo-China, Malesia, and Papuasia.

Appearance

Growth habit

CreepingClimbingClumping

Leaf shape

LanceOval

Leaf texture

SmoothLeathery

Frequently asked

Can Flask-Shaped Pitcher Plant grow in a closed terrarium?

Yes. Flask-Shaped Pitcher Plant prefers very high (above 80%) humidity, which is what a closed terrarium provides, and tolerates indirect-light-loving conditions.

Does Flask-Shaped Pitcher Plant need drainage?

Flask-Shaped Pitcher Plant prefers a moist substrate. Drainage is helpful but not critical; consistent moisture matters more.

What humidity does Flask-Shaped Pitcher Plant need?

Flask-Shaped Pitcher Plant does best in very high (above 80%) humidity.

Is Flask-Shaped Pitcher Plant pet-safe?

Flask-Shaped Pitcher Plant is considered non-toxic to common household pets.

How tall does Flask-Shaped Pitcher Plant grow?

Flask-Shaped Pitcher Plant typically reaches 10–100 cm at maturity.

How do you propagate Flask-Shaped Pitcher Plant?

Flask-Shaped Pitcher Plant can be propagated by division or stem cuttings or seeds.

References

  1. 1

    Wikipedia — Nepenthes ampullaria

    https://en.wikipedia.org/wiki/Nepenthes_ampullaria
  2. 2

    Carnivorous Plants Guide — Nepenthes ampullaria Care

    https://www.carnivorousplantsguide.com/nepenthes-ampullaria-care/
  3. 3

    Carnivorous Plant Nursery — Nepenthes ampullaria

    https://carnivorousplantnursery.com/products/nepenthes-ampullaria
  4. 4

    RedLeaf Exotics — N. ampullaria (great for terrariums)

    https://redleafexotics.com/products/n-ampullaria-typical
  5. 5

    Here But Not — Nepenthes Care: A Different Approach to Growing Tropical Pitcher Plants

    https://herebutnot.com/nepenthes-care-a-different-approach-to-growing-tropical-pitcher-plants/
  6. 6