Syzygium jambos seeds, rose apple (Eugenia jambos)
Eugenia jambos, Rose apple seeds
Eugenia jambos belongs to the family of the Myrtaceae, the myrtles. E. jambos is native to Southeast Asia. Carl Linne was the first who described the plant. He gave the plant the Latin name Eugenia jambos. Nowadays the plant belongs to the genus Syzygium and is known as Syzygium jambos. E. jambos is also known as rose apple. The rose apple grows as a tree and reaches a height of 10 m. The leaves are longish and glossy. The gloss comes from the oil glands that are on both sides of the leaf. The leaves get 26 cm long and 5 cm wide. The young leaves are first reddish. The reddish color vanishes while aging until the leaves are dark green. The flowers are white. They get 3 cm in diameter. The really spectacular parts of the flower are the stamens. They are 3 cm long and therefore much longer than the corolla. The stamens are white and give the flower a very filigree look. The flowers are clustered in inflorescences. The fruit is a berry. It is round and reaches 5 cm in diameter. If one cuts the fruit it smells like a rose. That is why the plant is called rose apple. The fruits are edible. The pulp is slightly yellow. The natives produce jam or juice from the berries. But they can also be eaten raw with a little bit of sugar. The fruit contains just one or two seeds. The wood is hardly used. E. jambos is more used as an ornamental plant due to its wonderful flowers. The rose apple is said to have a healing effect. It is used against fever and skin irritations. However those effects are not scientific proven.
The seeds of the rose apple do not need any pretreatment. They can be planted directly into the substrate. At a temperature of about 25°C and constantly moist substrate, germination occurs after just 2 to 4 weeks. The adult plant prefers a sunny place. The rose apple is not winter hardy.