Last edited on November 02, 2026. View history
Sumire Mochi Barley
A variety of barley
How to sow sumire mochi barley: Direct seed using 15cm spacing, or broadcast and rake in
Sun requirement for sumire mochi barley: Plant in Full Sun
An ancient Japanese naked food barley with purplish grain and the rare sticky, glutinous trait. It reached Kōanga (a NZ seed bank) through a Californian heritage-grain seed-saving group. A spring-growing type that makes good sprouted barley cakes.
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Sumire mochi barley 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 sumire mochi barley, the FAO EcoCrop database gives a lowest growing temperature of 2°C and a shortest growing cycle of 90 days at its best temperature, about 1395 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 sumire mochi barley 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 sumire mochi barley
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Ecological requirements
Data from the FAO EcoCrop database for Hordeum vulgare L.
| Family / Taxonomy | Liliopsida Commelinidae Cyperales Gramineae |
|---|---|
| Killing temperature | growth: 0 °C, rest: -4 °C |
| Life form | grass |
| Life span | annual |
| Habit | erect |
| Optimal soil depth | deep (>>150 cm) |
| Optimal soil texture | medium |
| Optimal soil fertility | moderate |
| Optimal soil drainage | well (dry spells) |
| Optimal soil salinity | low (<4 dS/m) |
| Photoperiod | neutral day (12-14 hours), long day (>14 hours) |
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