White flowers are borne from April to June, followed by the much anticipated red or sometimes yellow fruit in late summer. Bears large, firm, brilliant red fruits on spreading laterals. Raspberries are biennials that perform best in full sun with plenty of water and a good fertilizing when blooms begin. They are generally thorny, although some cultivars are thornless. A slow warming spring, such as in the Pacific Northwest, is required for optimal flower and fruit production. Hardy canes do not require staking. Birds also love the fruit, so you may have to share the harvest. Fruit is produced on one year old wood. For best results, cut down all fruited canes to ground level at the end of the season.