Earth100 · CC BY-SA 3.0
Choy sum
Plant·Brassica rapa var. parachinensis
Part shade to full sun
Sun
Moist soil
Water
Well-drained soil
Drainage
Not recorded
Hardiness
Coverage · 98 fields
Growth and size10 fields
Plant type
Plant
AI estimate100 % agree
Spread
30 cm
AI estimate58 % agree
Height at age
—
empty
Spacing
10 cm (at least 5 cm)
AI estimate55 % agree
Growth rate
Fast“A fast growing plant, it can take less than ten weeks from sowing to harvesting.”
Habit
—
empty
Root depth
Shallow“The plant is shallow rooted and intolerant of drought, it responds well to a moist fertile soil but succeeds in poorer soils than standard Pak choi.”
Forest garden layer
Herb layer
AI estimate90 % agree
Lifespan
~1 years
AI estimatenot measured yet
Roots6 fields
Root form
Taproot“The species was actually named for the cultivated garden turnip with its edible swollen tap root.”
Storage organ
None“It does not multiply vegetatively: it has no rhizomes, runners, suckers or offspring bulbs or tubers.”
Spreads
No“It does not multiply vegetatively: it has no rhizomes, runners, suckers or offspring bulbs or tubers.”
Lateral spread in cm
12 cm“The bulk of the root system is found within a depth of 12 cm (4+1⁄2 in) and is confined to a radius of 12 cm (4+1⁄2 in).”
Root depth in cm
Typical 12 cm“The bulk of the root system is found within a depth of 12 cm (4+1⁄2 in) and is confined to a radius of 12 cm (4+1⁄2 in).”
Mycorrhiza
Non-mycorrhizal
AI estimatenot measured yet
Light, water and soil9 fields
Sun
Full sun, light shade, part shade · best: full sun“Although it grows best in full sun, it can also succeed in moderate shade.”PFAF“It can grow in semi-shade (light woodland) or no shade.”
Hours of sun
6–8 h
AI estimatenot measured yet
Drought tolerant
No“The plant is shallow rooted and intolerant of drought, it responds well to a moist fertile soil but succeeds in poorer soils than standard Pak choi.”
Tolerates waterlogging
—
empty
Soil type
Compacted soil
Copes badly
AI estimatenot measured yet
Climate5 fields
Hardiness
—
empty
Killing frost
—
empty
Growing temperature
5–25 °C · optimal 10–18 °C
AI estimatenot measured yet
Chill hours
0 h
AI estimatenot measured yet
Native range
—
empty
Care (becomes tasks in Manage)8 fields
Sowing
After the last frost · lasts 180 days“sow in situ from early spring to late summer”
Sowing appears 3 times with different timing.
PFAFpartly
Sowing
August · lasts 31 days“Seed - sow in situ July/August.”
Sowing appears 3 times with different timing.
Sowing
July · lasts 62 days“The latest sowings for winter use can be made in mid to late summer”
Sowing appears 3 times with different timing.
PFAFpartly
Watering
After the previous stage“the soil is not allowed to dry out”
Watering appears 2 times with different timing.
PFAFpartly
Watering
May · lasts 120 days
Watering appears 2 times with different timing.
AI estimatenot measured yet
Weeding
After the previous stage · 14 days after · lasts 60 days
AI estimatenot measured yet
Feeding
After the previous stage · 20 days after · a balanced fertiliser
AI estimatenot measured yet
Protection
After the first frost · -14 days after · lasts 60 days · frost
AI estimatenot measured yet
Through the year5 fields
Leafing out
Once it is warm enough · lasts 3 days“seed banks that germinate quickly (~1-3 days) in ideal soil temperatures”
Edible parts and pollination6 fields
Pollination
Self-fertile · hermaphrodite“The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.”PFAF“The plant is self-fertile.”
Pollinated by
Bees“The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.”
Ecology5 fields
Attracts
Bees, flies, butterflies“The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.”Wikipedia“Numerous pollinators are attracted to its bright yellow flowers, including bees, flies, and butterflies.”
Pests
Small white butterfly (pieris rapae), slugs“A common visitor, the small white butterfly (Pieris rapae) uses the plant both as a nectar source and as a host for larval feeding.”PFAF“However, they can be troubled by slugs and other creatures so it is often better to harvest them in late autumn or early winter and store them in a cool but frost-free place.”
Diseases
Clubroot, downy mildew
AI estimatenot measured yet
Takes up
Sulfur, calcium, potassium
AI estimatenot measured yet
Fixes nitrogen
No
AI estimatenot measured yet
Propagation and names4 fields
Seed
—
empty
Not sorted yet40 fields
Fields the parser stores that this page has no row for yet. They show up here automatically, so nothing is hidden.
forage.DK.edibility_basis
inferred
AI estimatenot measured yet
forage.US.edible_parts
[{"part":"Leaves","preparation":"raw or cooked"},{"part":"Flowers"},{"part":"Immature flowering stems","preparation":"cooked like broccoli"},{"part":"Seed","preparation":"source of an edible oil"}]“Leaves - raw or cooked.”PFAF“Edible Parts: Flowers Leaves”PFAF“Immature flowering stems - cooked like broccoli.”PFAF“An edible oil is obtained from the seed.”
forage.US.edibility_basis
inferred
AI estimatenot measured yet
forage.TROPICAL.edible_parts
[{"part":"Leaves","preparation":"raw or cooked"},{"part":"Flowers"},{"part":"Immature flowering stems","preparation":"cooked like broccoli"},{"part":"Seed","preparation":"source of an edible oil"}]“Leaves - raw or cooked.”PFAF“Edible Parts: Flowers Leaves”PFAF“Immature flowering stems - cooked like broccoli.”PFAF“An edible oil is obtained from the seed.”
forage.TROPICAL.edibility_basis
inferred
AI estimatenot measured yet
ornamental.basis
documented
AI estimatenot measured yet
ornamental.fragrance.source
none
AI estimate100 % agree
ornamental.fragrance.intensity
subtle
AI estimatenot measured yet
ornamental.confidence
high
AI estimatenot measured yet
ornamental.fall_interest
false
AI estimatenot measured yet
ornamental.flower_colour
yellow“Numerous pollinators are attracted to its bright yellow flowers, including bees, flies, and butterflies.”
ornamental.evidence_quote
Turnip (Brassica rapa) produces yellow flowers and green foliage. It does not have significant autumn foliage color or winter structure.
AI estimatenot measured yet
ornamental.foliage_colour
green
AI estimate82 % agree
ornamental.foliage_texture
medium
AI estimatenot measured yet
ornamental.winter_structure
none
AI estimatenot measured yet
ornamental.autumn_foliage_colour
none
AI estimatenot measured yet
care_regime
routine
AI estimatenot measured yet
propagation.establishment_years
0
AI estimate40 % agree
sun_requirement.best
full_sun“Although it grows best in full sun, it can also succeed in moderate shade.”
forage_proposals.DK.edibility_tier.tier
edible“They can be eaten at any stage from seedling to mature plant.”
forage_proposals.DK.edibility_tier.confidence
medium
AI estimatenot measured yet
forage_proposals.DK.edibility_tier.evidence_quote
They can be eaten at any stage from seedling to mature plant.
AI estimatenot measured yet
forage_proposals.US.edibility_tier.tier
edible“They can be eaten at any stage from seedling to mature plant.”
forage_proposals.US.edibility_tier.confidence
medium
AI estimatenot measured yet
forage_proposals.US.edibility_tier.evidence_quote
They can be eaten at any stage from seedling to mature plant.
AI estimatenot measured yet
forage_proposals.TROPICAL.edibility_tier.tier
edible“They can be eaten at any stage from seedling to mature plant.”
forage_proposals.TROPICAL.edibility_tier.confidence
medium
AI estimatenot measured yet
forage_proposals.TROPICAL.edibility_tier.evidence_quote
They can be eaten at any stage from seedling to mature plant.
AI estimatenot measured yet
function_profile.biomass_return.confidence
medium
AI estimatenot measured yet
function_profile.nutrient_flows.consumes
[{"basis":"documented","demand":"high","nutrient":"nitrogen","confidence":"high"},{"basis":"documented","demand":"moderate","nutrient":"phosphorus","confidence":"high"},{"basis":"documented","demand":"high","nutrient"…
AI estimatenot measured yet
function_profile.nutrient_flows.provides
[{"basis":"inferred","nutrient":"sulfur","mechanism":"biomass_return","confidence":"low"},{"basis":"inferred","nutrient":"calcium","mechanism":"biomass_return","confidence":"low"},{"basis":"inferred","nutrient":"potas…
AI estimatenot measured yet
function_profile.biotic_interactions
[{"taxa":["bees"],"basis":"documented","valence":"beneficial","relation":"attracts","confidence":"high","evidence_quote":"The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.","org…“The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.”
function_profile.aromatic_pest_effect.value
false
AI estimate80 % agree
function_profile.aromatic_pest_effect.confidence
low
AI estimatenot measured yet
climate_tolerance.photoperiod_response
day_neutral
AI estimatenot measured yet
soil_interactions.organic_matter_contribution
medium
AI estimatenot measured yet
component_metadata.growth_cycle
biennial“Brassica rapa is a BIENNIAL growing to 0.5 m (1ft 8in).”
resource_interfaces.inputs
[{"resource":"light","quantity_description":"full sun"},{"resource":"water","quantity_description":"moist soil; intolerant of drought"},{"resource":"pollination","quantity_description":"bee pollination; hermaphrodite …“Succeeds in full sun in a well-drained fertile preferably alkaline soil.”PFAF“The plant is shallow rooted and intolerant of drought, it responds well to a moist fertile soil but succeeds in poorer soils than standard Pak choi.”PFAF“The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.”
resource_interfaces.outputs
[{"resource":"seeds","quantity_description":"4 to 46 seeds per pod"}]“A single pod can bear 4 to 46 seeds.”