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Last edited on November 02, 2026. View history

Mr Chapman green pie melon Mr Chapman Green Pie Melon

Citrullus lanatus

A variety of melon

How to sow Mr Chapman green pie melon: Direct seed. If planting indoors, use peat pots and harden off before transplanting seedlings outside.

Sun requirement for Mr Chapman green pie melon: Plant in Full Sun

A pie melon found at a roadside stall in Dargaville, grown by a Mr Chapman, on the way to Pōuto. It was once widely grown in Northland and is prized for pickling. Very vigorous and easier than watermelon. Sow in trays or 10 cm pots, prick out at 2.5 cm, then plant out at 50 cm once plants have two to four true leaves, in rich, free-draining soil with cloches if needed.

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Mr chapman green pie melon facts

Lifespan

Annual living and reproducing in a single year or less
Optimal temperature 20–35 °C
Absolute temperature 15–40 °C
FAO EcoCrop
Optimal rainfall 500–700 mm/year
Absolute rainfall 400–1800 mm/year
FAO EcoCrop
Optimal soil pH 6–7
Absolute soil pH 5.5–7.5
FAO EcoCrop

Crop cycle

0–0 days
FAO EcoCrop

Max altitude

1000 m
FAO EcoCrop

Optimal light

clear skies to very bright
FAO EcoCrop
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 Mr Chapman green pie melon, the FAO EcoCrop database gives a lowest growing temperature of 9°C and a shortest growing cycle of 50 days at its best temperature, about 750 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 Mr Chapman green pie melon 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.

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Ecological requirements

Data from the FAO EcoCrop database for Citrullus lanatus (Thunb.) Matsumura & Nakai

Family / Taxonomy Magnoliopsida
Dilleniidae
Violales
Cucurbitaceae
Life form herb, vine
Life span annual
Habit prostrate/procumbent/semi-erect
Optimal soil depth deep (>>150 cm)
Optimal soil texture medium
Optimal soil fertility high
Optimal soil drainage well (dry spells)
Optimal soil salinity low (<4 dS/m)
Photoperiod long day (>14 hours)

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