How far apart should I plant Oca?

Plant Oca 30cm apart with 60cm between rows.

When can I harvest Oca?

Oca is ready to harvest approximately 180 days after transplanting.

Oca is classified as Half Hardy.

Oxalis tuberosa

Half Hardy Warm Season Single Harvest

Sow indoors 6 weeks before last frost, or direct sow outdoors after frost risk has passed and soil reaches 10°C.

Sow seeds

Germination ~14d

Flowering ~140d

Harvest ~210d

Sow seeds

Germination ~14d

Flowering ~140d

Harvest ~210d

Approximate days from start

Care Essentials

Apply a balanced liquid feed every 2-3 weeks from midsummer onwards. Avoid high-nitrogen feeds which promote foliage at the expense of tuber formation.
Oca is a short-day plant — tubers only form as days shorten in autumn. Maximise the growing season by starting early indoors and planting in a warm, sheltered spot. Earth up stems like potatoes to encourage more tubers.

Companion Planting

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Growing Conditions

Min. soil temperature: 10°C+

Get a personalized schedule for Oca based on your exact frost dates

Plant tubers 30 cm apart in rows 60 cm apart. Earth up as stems grow, similar to potatoes.

Feeding: Apply a balanced liquid feed every 2-3 weeks from midsummer onwards. Avoid high-nitrogen feeds which promote foliage at the expense of tuber formation.
Watch for: Slugs
Aphids
Late frost damage

How far apart should I plant Oca?: Plant Oca 30cm apart with 60cm between rows.
When can I harvest Oca?: Oca is ready to harvest approximately 180 days after transplanting.
Is Oca frost hardy?: Oca is classified as Half Hardy.

Plan Oca in your garden — get personalized frost-date scheduling