Trapa incisa
Trapa incisa
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Pl. C6C0 — Trapa incisa
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IOverview
Overview
Trapa incisa, known as the water caltrop or Assam caltrop, is an annual aquatic plant native to regions including Assam, Cambodia, China, India, Japan, and Vietnam. It thrives in full sun and requires water for its growth, making it a distinctive feature of wetland areas. This plant is notable for its edible seeds, which can be harvested for consumption. Its adaptability to various soil types—light, medium, or heavy—and its annual life cycle make it well-suited to diverse environments within its native range.
Quick answers
What is Trapa incisa?
Trapa incisa, known as the water caltrop or Assam caltrop, is an annual aquatic plant native to regions including Assam, Cambodia, China, India, Japan, and Vietnam. It thrives in full sun and requires water for its growth, making it a distinctive feature of wetland areas.
Growingconditions · propagation · uses
VCultivation
Cultivation
Trapa incisa thrives in full sun and requires ample water, making it suitable for aquatic or boggy conditions. The soil should be light to heavy but well-draining; sandy, medium, or clay soils are appropriate. This annual plant is native to regions across Asia and is hardy in temperate areas. For propagation, seeds can be used directly. Ensure the growing environment mimics its natural habitat for best results.
Light
Full sun
Water
Water
Soil
Light (sandy), Medium, Heavy (clay)
Life cycle
Annual
For first-time growers
How to grow Trapa incisa for the first time
8steps
Start with Trapa incisa as an annual in a container, focusing on basic care.
- 1
What you'll need
A container, seeds or seedlings, potting soil.
- 2
Best time to plant
Plant in spring after the last frost.
- 3
Soil and container prep
Use a well-draining mix suitable for aquatic plants. Ensure the container has drainage holes.
- 4
Sowing or transplanting
Direct sow seeds into the soil, covering them lightly. Alternatively, plant seedlings in the container.
- 5
First two weeks
Keep the soil consistently moist and provide full sun exposure. Monitor for signs of stress.
- 6
Ongoing care
Maintain water levels and ensure the plant receives plenty of sunlight. Repot if necessary as the plant grows.
- 7
Harvest or pruning
Prune any dead or damaged parts to encourage healthy growth. Harvest seeds when they are ripe.
- 8
Common mistakes
Overwatering, planting in non-draining containers, neglecting sunlight.
VIEdible & utility
Edible & utility
Edible parts:Seed
Edible uses: The seed of Trapa incisa is edible and can be consumed raw or cooked. It is often prepared by roasting to enhance its flavor. Skip
Contextrange · companions · related
VIIDistribution
17 native · 0 introduced
Distribution
17 native · 0 introducedDistribution across1 continent· 17 native
Asia10 regions
native (10)CambodiaChinaIndiaJapanLaosMyanmarSouth KoreaTaiwanThailandVietnam
Broader regions
native:Hainan, Khabarovsk, Primorye
IXSpecimen gallery
1 image
Specimen gallery
1 imageXI
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Companion planting
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