Koji
Koji: 25 days to harvest, 7-10 days to germinate, 12 inches between plants, hardy in zones 5-9. Fruit runs to about 12". Give it full sun to part shade and high water. Because this is a hybrid, seed saved from it will not repeat the parent — plan on fresh seed each year.
Sowing
Direct sow or transplant after last frost; succession plant every 2-3 weeks for continuous harvest
Cultivation
- Sun
- Full sun to part shade
- Water
- High — consistent moisture needed
- Soil
- Well-drained, fertile soil with moderate moisture retention
- Spacing
- 12 inches
- Height
- 3 feet
- Season
- Warm season annual
Appearance & flavour
- Colour
- Green
- Size
- 12"
- Shape
- Cupped, savoyed leaves on long stems
- Flavour
- Mild, delicate flavor with a pleasantly crunchy texture and tender leaves.
In the kitchen
Salads, mixed greens, fresh eating, garnish
Pests, disease & resistance
- Pests
- Aphids, slugs, lettuce root aphids, flea beetles
- Diseases
- Lettuce mosaic virus, downy mildew, bacterial leaf spot
Planting calendar by USDA zone
| Zone | Start indoors | Transplant | Direct sow | Harvest |
|---|---|---|---|---|
| 1 | — | — | June – July | June – September |
| 2 | — | — | May – July | June – September |
| 3 | — | — | May – June | May – October |
| 4 | — | — | April – June | May – October |
| 5 | — | — | April – May | May – November |
| 6 | — | — | April – May | April – November |
| 7 | — | — | March – May | April – November |
| 8 | — | — | March – April | March – December |
| 9 | — | — | February – March | February – December |
| 10 | — | — | January – March | February – December |
| 11 | — | — | January – February | January – December |
| 12 | — | — | January – February | January – December |
| 13 | — | — | January – February | January – December |
Companion planting
8 beneficial pairings indexed for this variety, 3 to avoid.
Avoid
Nutrition (per 100 g)
- Protein (g)
- 0.742
- Fat (g)
- 0.0738
- Carbohydrate (g)
- 3.37
- Vitamin K (µg)
- 20.5
- Vitamin B6 (mg)
- 0.0401
- Calcium (mg)
- 14.2
- Iron (mg)
- 0.0332
- Magnesium (mg)
- 6.31
- Phosphorus (mg)
- 19.2
- Potassium (mg)
- 139
- Zinc (mg)
- 0.173
Where to buy seed and equipment
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Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.
Grown Koji?
Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.
Similar varieties
Other lettuce with a comparable time to harvest, so a season that suits Koji suits these too.
- Tatsoi 25 days
- Spinach 25 days
- Ruby Red Orach 28 days
- Miz America 28 days
- Red Cloud 28 days
- Rosie 21 days