Last edited on November 02, 2026. View history
Long Green Bush Marrow
A variety of zucchini
How to sow long green bush marrow: Direct seed indoors or outdoors
Sun requirement for long green bush marrow: Plant in Full Sun
A prolific bush marrow sent to Kōanga (a NZ seed bank) in 2000 by Audrey Melville of Miramar, Wellington. The marrows keep well, and young fruit can be picked as courgettes. Good stuffed with a grain, onion and pepper, and in spicy marrow cake. Transplant at 1 m.
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Long green bush marrow 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 long green bush marrow, the FAO EcoCrop database gives a lowest growing temperature of 6°C and a shortest growing cycle of 40 days at its best temperature, about 700 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 long green bush marrow 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 long green bush marrows
- Sow seeds in pots 4 weeks before planting out
- Dig compost into the bed 1 week before planting out
- Harden off the seedlings 1 week before planting out
- Set or refill beer traps for slugs and snails at planting out every week
- Water deeply at the base 1 week after planting out every week
- Mulch around the plants 3 weeks after planting out
- Hand pollinate the female flowers 6 weeks after planting out
- Check leaves for powdery mildew 6 weeks after planting out every 2 weeks
- Feed with liquid fertiliser 6 weeks after planting out every 2 weeks
- Pick fruit while small at first harvest every week
- Pull out finished plants 3 months after first harvest
Plant long green bush marrows with
garlic
marjoram
chives
Video
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Ecological requirements
Data from the FAO EcoCrop database for Cucurbita pepo L.
| Family / Taxonomy | Magnoliopsida Dilleniidae Violales Cucurbitaceae |
|---|---|
| Life form | herb, vine |
| Life span | annual |
| Habit | climber/scrambler/scadent |
| Optimal soil depth | medium (50-150 cm) |
| Optimal soil texture | medium, organic |
| Optimal soil fertility | moderate |
| 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) |
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