Randia formosa - Fragrance and fresh Blackberry Jam
Scientific name: Randia formosa
Synonyms: Mussaenda formosa, Randia mussaenda
Common name: Blackberry Jam Fruit, Raspberry Bush, Jasmin de Rosa
Origin: Central and South America
You don't have to make a preserve with this fruit - the fresh pulp tastes exactly like Blackberry Jam. Yet it's not too sweet and actually tastes even better than any preserve. When you see the shrub all covered by yellow fruit, you are anxious to pick, crack open all of them, and suck out the sweet and tasty exotic pulp... This is one of those fun rare fruits than one never gets tired of!
Randia formosa is a rare tropical to subtropical fruit, growing as a small evergreen bushy shrub, usually only 4-5 ft tall in the ground and 3-4 ft in container. It can be also trained into a miniature tree. The plant is closely related to gardenia and produces 1.5-2" star shaped, very fragrant, tubular white flowers that attract nocturnal moths. Olive-shaped yellow fruits are woody shelled, about 1" size and look like small loquats. They can be easily crushed between teeth. The fruit contains two cells with small flat seeds surrounded by sweet black soft pulp tasting like "blackberry jam", beloved of children and adults.
Besides tasty fruit, the plant has many other GREAT FEATURES.
Relatives of the Randia formosa are valued fragrant plants such as:
Culture of Randia formosa
Blackberry Jam Fruit can take both sun and shade. However, in filtered light leaves look healthier and greener.
The plant is relatively cold hardy and is said to withstand as low as 26F. However, young plants are more sensitive and should be protected from chill winds and frost. During cold period, watering should be reduced, otherwise leaves may become chlorotic - Randia formosa is very sensitive to over-watering particularly during cool season.
This species is reported to be drought tolerant, however, it requires regular watering until the plant is well-established. Young plants easily droop leaves if underwatered, they may even loose all the leaves overnight if the soil gets too dry! However, the plant usually recovers very quickly and new growth comes in a few days to a week.
In general, Randia formosa is easy in cultivation. The two most important requirements are - acidic soil and good drainage. If these two conditions are missing, most likely the leaves may turn chlorotic (yellow with green veins, see picture on the right) once there is a chance of a slight over-watering. This is not a fatal failure though, but effects the looks of the plant.
The best mixture for this plant is - 50:50 mix of perlite and peat moss (or coconut fiber). You may add some pine bark for a better drainage, too. Use slow-release fertilizer and apply microelements on regular basis to avoid possible chlorosis.
The Blackberry Jam Fruit is definitely a conversation piece, and tasting a "blackberry jam" from a gem of your rare fruit collection will always bring fun time for your family, friends and garden visitors.
Order Blackberry Jam Fruit Tree:
Picture of the actual plant for sale,
plants are in 1-3 gal containers,
picture taken November 2007: