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Oca or New Zealand Yam

Oca (New Zealand Yam)

Oxalis tuberosa

New Zealand Yam, also called Oca, is a nutritious and versatile root vegetable prized for its colourful, tangy-sweet tubers. Unlike traditional yams, these tubers come in shades of yellow, orange, and red, with a firm, slightly starchy texture and a refreshing citrus-like flavour.

A highly productive and low-maintenance crop, New Zealand Yam is well-suited for cooler climates and performs best in long growing seasons with mild frost tolerance. The tubers develop through late summer and early autumn, becoming sweeter after harvest when left to cure in the sun.

Where Can You Grow Oca?
New Zealand Yam thrives in Zones 6-9, preferring well-drained soil and full sun. It is ideal for raised beds, garden plots, and container growing, as it produces lush trailing foliage that benefits from mulching and hilling.

History and Historical Uses
Native to the Andes Mountains, New Zealand Yam has been cultivated for centuries as a staple crop in regions with cool, moist growing conditions. Traditionally grown alongside potatoes, Oca remains a valuable root vegetable due to its nutrient content, storage ability, and ease of cultivation.

Canadian Zone Information
Zones 8-9: Plant tubers in early spring, allowing a long growing season before autumn harvest.
Zones 6-7: Start tubers indoors in early spring and transplant after the last frost.
Zones 4-5: Grow in containers or raised beds, providing season extension methods such as row covers for late autumn growth.

How to Grow and Harvest Oca

  • Planting: Plant tubers 5-8cm (2-3in) deep, spacing 30-45cm (12-18in) apart.
  • Watering: Keep soil evenly moist, avoiding waterlogging.
  • Hilling: Mound soil around stems as they grow to encourage tuber formation.
  • Harvesting:
    • Wait until frost kills the foliage, then dig up tubers.
    • Cure in sunlight for 1-2 weeks to enhance sweetness.

Seed Saving Tips for Future Supply

  • Select the Best Tubers: Choose healthy, firm tubers for replanting next season.
  • Store Properly: Keep tubers in a cool, dry place over winter.
  • Replant: Plant saved tubers in spring after the last frost for the next growing cycle.

Certified Organic By

Islands Organics Producers Association (Cert#1962)

≈ 4-9 items | 80g (2.82oz)

Click here for our Refund Policy

$14.00 CAD
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Growing Information
Common Name Oca (New Zealand Yam)
Scientific Name Oxalis tuberosa
Seed Count 4-9
Metric Weight 80 g
Imperial Weight 2.82 oz
Height 0.3-0.6m (1-2ft)
Spread 0.6-1m (2-3ft)
Canadian Zone Information 6-9
Growing Difficulty Moderate
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Care Instructions
Organic Certification

We (a small farm) ship every week, on Wednesday!

Pick up available from our farm stand 542 Wootton Road, Metchosin

100% Canadian Grown in Metchosin, Vancouver Island, BC, Canada.

Processed-By-Hand

Certified Organic

Open Pollinated

Non-GMO

Frequently asked questions

Are products sold at the farm?

No.

We do have a farmstand that is open during the season: March/April through to June/July

Will my order have tracking?

Maybe.

We ship all seed packages using Letter Mail through Canada Post.

However, if you order any Sprays, Bouquets, Root Stock, or Tubers; we automatically add protected shipping in a prepaid Canada Post box. These have a tracking number.

How much does shipping cost?

Save $20 when you spend $200

All our shipping fees include a handling fee

$7 Small Envelope 

Orders 0g–7gup to 3 seed packages

$8 Medium Envelope

Orders 8g–15gup to 7 seed packages or ~ 1 Forager Pet Mix

$9 Large Envelope

Orders 16g–21gup to 10 seed packages and/or~ 1-2 Forager Pet Mix and/or rootstock/cutting

$13 Tiny Parcel

Orders 22g–44gup to 22 seed packages and/or~ 1-2 Forager Pet Mix and/or rootstock/cutting

$16 Extra Small Parcel

Orders 45g–135gSeed packages and/or~ 1-5 Forager Pet Mix/spray and/or rootstock/cutting

If you spend $200 this actually becomes free shipping with a $4 discount.

$19 Small Parcel

Orders 136g–500gSeed packages and/or ~ 1-5 Forager Pet Mix/spray and/or rootstock/cutting and/or 1 Tuber or JA

If you spend $200 this actually becomes free shipping with a $1 discount.

$22 Medium Parcel

Orders 501g–1400gSeed packages and/or ~ 1-5 Forager Pet Mix/spray and/or rootstock/cutting and/or 1-3 Tuber or JA

If you spend $200 this actually becomes $2.

$25 Large parcel

Orders 1401g–2500gSeed packages and/or ~ 1-5 Forager Pet Mix/spray and/or rootstock/cutting and/or 1-5 Tuber or JA

If you spend $200 this actually becomes $5.

$30 Extra Large Parcel

Orders 2501g and up

Anything your heart desires.

If you spend $200 this actually becomes $10.

What is your Customer Satisfaction policy?

Mistakes happen and can be fixed. So missing items, wrong items, or even damaged items can be replaced.

We will always work with you to find an appropriate solution.

Thank you for supporting a small team of Canadian seed farmers!

How long does shipping take?

Letter Mail can take up to 5-6 weeks.

Parcels can take up to 1-2 weeks.

We ship Wednesdays which can also lead to delays.

Are all your products 100% Canadian?

Yes. All our non GMO products are grown in Metchosin BC on 3 acres of Certified Organic land!

What is your refund policy?

We are a resolution first small business. That means we would love for you to be happy with our products.

However, if you received a product damaged out of the box, send us a photo within 3 days of the delivery date, and we will provide a replacement or a refund. Please click the link below to read more details about our policy.

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