Sweet Orange

I drew the sweet orange with blossom and ripe fruit on the same branch, because an orange tree can hold both at once. A half fruit is opened to show the juice vesicles and the pale core. In this sweet orange print the whole life of the fruit is set side by side: the white flower that comes first, the round fruit that follows, and the inside that most people never look at closely. The orange is so common on the table that its construction can disappear from view. The plate returns it to the branch, as part of the studio’s complete collection of plates.

In shortThe sweet orange, Citrus × sinensis, is an evergreen citrus tree and an ancient hybrid of pomelo and mandarin. Its fragrant white flowers ripen into segmented fruit with an oil-rich peel. The plate shows blossom and ripe fruit on one branch, with a half fruit opened.

Key Facts

Can an orange tree carry blossom and ripe fruit at the same time?

Yes. An orange tree can hold blossom, green fruit and ripe fruit together, depending on the climate and the cultivar. In warm climates the timing spreads so widely that flowering and fruiting have been recorded in every month of the year. The late Valencia orange is the clearest case: it carries two crops on the tree after bloom, because the previous season’s fruit takes about 15 months to mature.

The blossoms are white, with five petals, and strongly fragrant. They appear against firm, glossy evergreen leaves that keep their colour while the fruit develops, so the tree is never bare. A tree often reaches about 6 metres, and a healthy one bears abundantly for 50 to 80 years or more.

What is inside a sweet orange?

Inside a sweet orange are segments, each filled with juice vesicles. The segments are the fruit’s carpels, arranged around a central axis, and the pale core is that axis. Each vesicle is an elongated sac that swells with juice as the fruit develops. Botanically the whole fruit is a hesperidium, a modified berry with a leathery, oil-rich rind.

The peel is thick, dimpled and dotted with oil glands. Bend it or zest it and the glands release the aromatic spray that identifies an orange before the fruit is tasted. The white pith between peel and flesh is part of the protective wall of the fruit, not packaging added around the edible centre. Most sweet oranges are round with orange pulp. The blood orange has red pulp, and the navel is seedless.

Is the sweet orange a natural species?

Not quite. The sweet orange is an ancient cultivated hybrid, derived from pomelo and mandarin ancestry. That is why its name is often written with a multiplication sign, Citrus × sinensis, although Citrus sinensis is still widely used in horticulture. It is believed to have arisen in southern China and Southeast Asia.

People carried it west along the trade routes from Asia to the groves of southern Europe. Cultivation spread through India and East Africa to the eastern Mediterranean, helped by Roman conquests and Arab trade, and orange trees were common in the Canary Islands by the time of Columbus. Grafting let growers repeat a favoured tree without losing the qualities of its fruit. The plain name hides a long history of selection, movement and care. It is also a reminder that the fruit on the table is the work of many centuries of growers.

Why can a ripe orange still have green on its skin?

Peel colour depends on temperature as well as ripeness. The orange pigment shows when cooler weather breaks down the green chlorophyll in the skin. In consistently warm climates a ripe fruit can keep some green. Growers judge maturity by cultivar, season, flavour and the quality of the inside, not by colour alone. A Valencia left on the tree into summer can turn partly green again while staying sweet and juicy inside.

An orange also does not sweeten after it is picked, so it is harvested ripe. In Florida, early sweet oranges such as navels are picked from October to January, mid-season types from about December to March, and late Valencia from March to June. In the Mediterranean the winter citrus season runs from November to March.

Drawing the sweet orange

The plate shows blossom and ripe fruit on one branch, with leaves around them. Placing them together lets a full season sit in one view: white petals, glossy leaf and dimpled peel. The peel is not a flat circle. Its small dimples describe the curve and give the rind its thickness and weight.

A half fruit is opened to show the juice vesicles and the pale core. I drew the segments with their elongated sacs, because a photograph of a cut orange usually shows a wet shine and loses the structure. The hand-drawn digital illustration keeps vesicles, pith and core distinct, and the orange stays bright without turning into one flat colour.

Where does a sweet orange print work on a wall?

A sweet orange print suits a kitchen, a breakfast room, a dining wall or a gallery wall of botanical studies, where it can be the single bright note. Pale oak and warm white keep it fresh, and a narrow dark frame gives it the character of an old fruit plate. A generous neutral mount lets the fruit read from across the room. It pairs with the papaya plate for a two-print fruit study at the same height. It belongs to the Mediterranean Table collection, and it sits with other citrus and fruit plates among the studio’s botanical art prints. In the photograph below, the orange hangs as a pair with the pomegranate in a bedroom.

Fine-art print →

Frequently Asked Questions

Why is it called a sweet orange?

The name separates it from the bitter or sour orange types. Sweet oranges are the familiar eating and juicing oranges, sold in many cultivars. Bitter oranges are a different group, grown mostly for marmalade, flavouring and rootstocks.

Is an orange botanically a berry?

Yes, in a special form. A citrus fruit is a hesperidium, a modified berry with a leathery, oil-rich rind and a segmented interior. The segments are carpels, and the juicy flesh is made of vesicles that grow from the inner wall of each segment.

Why is the scientific name written with a multiplication sign?

The sign marks the sweet orange as a hybrid. The form Citrus × sinensis shows its mixed ancestry from pomelo and mandarin. The shorter Citrus sinensis is still common in horticulture and in the fruit trade, and both names refer to the same tree.

Are navel and blood oranges different species?

No. Navel, Jaffa and blood oranges are varieties of the one sweet orange. The navel is seedless, and the blood orange has red pulp. They differ in fruit and season, and the tree and flower are alike.

How is this print made, and how does it reach me?

There are two formats. The digital download is a high-resolution file that you print yourself, at home or at a print shop; no physical item is shipped. The fine-art print is printed to order on archival paper or canvas, framed or unframed, in sizes from small prints to over 150 cm (60 inches), and delivered to your door.