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Last edited on 3 Feb 2024. View history

Mexican Orange

A variety of orange

How to sow mexican orange: Transplant grafted sapling

Sun requirement for mexican orange: Plant in Full Sun

The Orange is a tropical evergreen tree that produces round orange fruits, also known as "Oranges." Many species are self-pollinating, but having multiple trees for cross pollination can improve fruit size. Trees need temperatures between 21-32° C to grow properly and produce fruit. Oranges can usually withstand winter temperatures down to -6.1° C without experiencing damage to their leaves or trunk. Trees will bear fruit 2-3 years after transplanting.8

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Mexican orange facts

Lifespan

Annual living and reproducing in a single year or less
Optimal temperature 20–30 °C
Absolute temperature 13–38 °C
FAO EcoCrop
Optimal rainfall 1200–2000 mm/year
Absolute rainfall 450–2700 mm/year
FAO EcoCrop
Optimal soil pH 5–6
Absolute soil pH 4–8.3
FAO EcoCrop

Crop cycle

180–365 days
FAO EcoCrop

Max altitude

2100 m
FAO EcoCrop

Optimal light

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 mexican orange, the FAO EcoCrop database gives a lowest growing temperature of 13°C and a shortest growing cycle of 180 days at its best temperature, about 2160 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 mexican orange 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 Citrus sinensis (L.) Osbeck

Family / Taxonomy Magnoliopsida
Rosidae
Sapindales
Rutaceae
Killing temperature growth: 0 °C, rest: -10 °C
Life form tree
Life span perennial
Habit erect
Optimal soil depth deep (>>150 cm)
Optimal soil texture medium, light
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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