Last edited on November 02, 2026. View history
Nz Heritage Coriander
A variety of coriander
How to sow NZ heritage coriander: Direct seed indoors, transplant seedlings outside after hardening off
Sun requirement for NZ heritage coriander: Plant in Full Sun
An ancient culinary and medicinal herb. The leaves are used as cilantro, the seeds as coriander, and the roots are excellent in soups and stews. Grows well in New Zealand during the cool seasons. A heavy feeder. Sow in trays in early spring or early autumn, prick out at 2.5 cm and transplant at 6 cm high at 20 cm diagonal spacing. For seed, don't pick the leaves heavily.
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Nz heritage coriander facts
Lifespan
Crop cycle
Max altitude
Optimal light
What are growing degree days?
A plant grows with warmth, not with days. A growing degree day is one day's worth of useful warmth: how many degrees the day's average temperature is above the lowest temperature the crop grows at. Add them up from planting and you know how far along the crop is, whatever the calendar says.
Say that lowest temperature is 10°C. A day averaging 17°C gives 7 growing degree days. A day averaging 8°C gives none, as it is too cold for the crop to grow. That is why the same lettuce takes about 50 days in a summer and 90 in an autumn: it needs the same total warmth either way.
For NZ heritage coriander, the FAO EcoCrop database gives a lowest growing temperature of 4°C and a shortest growing cycle of 35 days at its best temperature, about 560 growing degree days to a first harvest.
Where you've told us where your garden is, we use this and the weather there to predict when your NZ heritage coriander will be ready to harvest. We don't use it for how long a plant lives or when it finishes: we go by what members have logged for that.
Growing NZ heritage coriander
- Dig compost into the bed 1 week before sowing
- Water regularly at sowing every week
- Thin the seedlings 2 weeks after sowing
- Sow another batch 3 weeks after sowing every month
- Pick leaves regularly at first harvest every week
- Collect seeds from plants left to flower 6 weeks after first harvest
- Pull out finished plants 8 weeks after first harvest
Plant NZ heritage coriander with
pea
cannabis
Video
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Time to harvest
If sown now, expect a first harvest in about 35 to 140 days.
From the growing cycle in the FAO EcoCrop database, which is the same wherever it is grown.
Ecological requirements
Data from the FAO EcoCrop database for Coriandrum sativum L.
| Family / Taxonomy | Magnoliopsida Rosidae Apiales Umbelliferae |
|---|---|
| Killing temperature | growth: 0 °C, rest: -10 °C |
| Life form | herb |
| Life span | annual |
| Habit | erect |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium |
| Optimal soil fertility | high |
| Optimal soil drainage | well (dry spells) |
| Optimal soil salinity | low (<4 dS/m) |
| Photoperiod | short day (<12 hours), neutral day (12-14 hours), long day (>14 hours) |
Learn more about NZ heritage coriander
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