Green Persimmon (Diospyros oleifera): The Curious Species That Stays Green When Ripe

Scientific Identity

Diospyros oleifera, in the family Ebenaceae, is a persimmon species native to China. It is commonly known as the green persimmon or oil persimmon (oleifera meaning 'oil-bearing'). It is a different species from Diospyros kaki (Trabzon persimmon); its fruit stays greenish-brown even when fully ripe and is covered in a fine layer of fuzz. This trait makes it instantly distinguishable from other persimmon species.

Permaculture Value

Diospyros oleifera is most widely used worldwide as a rootstock for grafting Diospyros kaki (Oriental persimmon) saplings; its strong root system and disease resistance give grafted kaki varieties good compatibility and hardiness. On its own it is also a hardy, low-maintenance tree. Its deep roots benefit soil structure and it provides shade in summer.

Medicinal/Edible Properties

Its fruit has an extremely high tannin content, making it quite astringent and not well suited to eating fresh. Instead, it is traditionally used to produce a persimmon tannin extract known in Japan as 'kakishibu'; this extract is used as a natural dye, preservative, and waterproof coating on paper, fabric, and wood. If the fruit becomes extremely soft, almost fermented in texture, it can be eaten in very small amounts, but this species is not primarily grown for food.

How to Grow

It needs full sun and grows well in well-drained soil. It is drought-tolerant and cold-hardy to a degree. It's usually grown in nurseries as a rootstock, but can also fruit on its own under garden conditions. It requires no special care, and minimal pruning is enough.

From the Garden

This tree's fruit is genuinely surprising - it looks unripe from the outside, but it's actually fully ripe. With its apple-green look and fuzzy texture, it's one of the most eye-catching and 'different' fruits in the garden.