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Variety profile · Ulluco

Long Yellow: smaak en teelt

Pale yellow slender tubers; also offered as Yellow Banana

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AI illustration of the described characteristics of Long Yellow
AI illustration

This image was created with AI from described plant characteristics and growing advice. It shows a possible situation and is not a photograph of a verified cultivar.

Use
Crop flavour: mild earthy to beetroot-like notes, depending on the selection; the texture stays firmer and may feel somewhat smooth or slimy. No separate flavour ranking is confirmed for the two yellow selections chosen here.
Care
Start healthy planting tubers frost-free and place them in a well-drained, sufficiently moist position after the risk of frost. Avoid overheating the trial pot and watch young growth for slugs and snails.
Harvest and flowering
Allow enough time for late tuber formation and harvest before the tubers freeze severely. Keep healthy small planting tubers identifiable, separate and frost-free.

What makes Long Yellow special?

Scent, flavour and use

No proven flavour difference from Cusco Market; general ulluco flavour and firm texture.

This describes the species' flavour; a separate flavour description for this variety has not yet been confirmed.

Crop flavour: mild earthy to beetroot-like notes, depending on the selection; the texture stays firmer and may feel somewhat smooth or slimy. No separate flavour ranking is confirmed for the two yellow selections chosen here.

Growing and harvesting this variety

The supplier lists Long Yellow and Yellow Banana as synonymous offering names; one cultivar identity.

Gather the late harvest carefully.

Inspiration for your space

Choose your way to grow

AI growing illustration: Ulluco · A bounded low bed
AI illustration

This image was created with AI from described plant characteristics and growing advice. It shows a possible situation and is not a photograph of a verified cultivar.

A bounded low bed
AI growing illustration: Ulluco · A large pot for a manageable trial
AI illustration

This image was created with AI from described plant characteristics and growing advice. It shows a possible situation and is not a photograph of a verified cultivar.

A large pot for a manageable trial

A bounded low bed

Plant pre-grown tubers after frost risk with room to spread. Maintain moisture and monitor late autumn.

  1. Plant pre-grown tubers after frost risk with room to spread.
  2. Maintain moisture and monitor late autumn.

Adapt this approach to the space and the following crop.

A large pot for a manageable trial

Use a well-drained pot that does not dry out in the heat. At harvest, free the entire rootball carefully and collect small tubers.

  1. Use a well-drained pot that does not dry out in the heat.
  2. At harvest, free the entire rootball carefully and collect small tubers.

Adapt this approach to the space and the following crop.

No climbing beans or potato foliage

Ulluco is Ullucus tuberosus, in the Basellaceae. Its succulent leaves and spreading stems belong to a different crop from potato. Do not describe it as a twining climbing bean: the usual cultivated form stays low and spreads. Choose a clearly bounded location to find small tubers at harvest. Label a purchased selection immediately; a yellow tuber alone does not prove its cultivar name.

Start with brief cooking and comparison

Ulluco's high moisture content and firm bite differ from floury potato. Try a small cleaned, cooked portion in a dish welcoming texture. The beetroot-like nuance varies; yellow colouring does not automatically make it weak or strong. Cusco Market and Long Yellow have similar colours, but shape and supplier names help separate trials. Photograph them with labels and record preparation. A failed late harvest is a climate experience, not proof the whole species cannot grow anywhere.

Scent, flavour and use

Crop flavour: mild earthy to beetroot-like notes, depending on the selection; the texture stays firmer and may feel somewhat smooth or slimy. No separate flavour ranking is confirmed for the two yellow selections chosen here.

Care, cutting and harvesting

Start healthy planting tubers frost-free and place them in a well-drained, sufficiently moist position after the risk of frost. Avoid overheating the trial pot and watch young growth for slugs and snails.

No fixed pruning task: let the healthy spreading plant grow and keep the edges accessible.

Allow enough time for late tuber formation and harvest before the tubers freeze severely. Keep healthy small planting tubers identifiable, separate and frost-free.

Cutting, caring and following the season

No fixed pruning task: let the healthy spreading plant grow and keep the edges accessible.

Species information and annual cycle
Space
Recommended spacing is missing. Check the plant label or seed packet; unknown space does not count as free space.
Soil
No pH range supported by sources is included. Test your soil and follow species and variety guidance.
Season
No automatic species calendar; your own observation determines the stage.
Care
Guide advice is available; the automatic species task matrix is not yet complete. Check the plant regularly and plan a task yourself if needed.
Ready to begin

What you need

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The basics
For care and harvesting

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Sources and image information

SeedSteps editorial team · checked on 13 October 2026. Flavour descriptions come from the listed sources; ripeness and growing conditions affect flavour. AI images illustrate described characteristics and do not prove cultivar identity.

  1. Ulluco growing guideCultivariable · 2026-10-13
  2. Ullucus tuberosusRoyal Botanic Gardens, Kew · 2026-10-13
  3. Bijzondere eetbare knollenVreeken’s Zaden · 2026-10-13