Cold Raspberries - The Raspberry Or Red Raspberry, (Rubus Idaeus) Is A Plant That Produces A Sweet, Red Composite Fruit In Late Summer Or Early Autumn. In Proper Botanical Language, It Is Not A Berry At All, But Instead An Aggregate Fruit Of Numerous Drupelets Around A Central Core. In Raspberry And Other Species Of The Subgenus Idaeobatus, The Druplets Separate From The Core When Picked, Leaving A Hollow Fruit, Whereas In Blackberry The Druplets Stay Attached To The Core. Photo