Dewberries (Rubus trivialis) have a somewhat more purplish-red hue than the darker blackberry (Rubus fruticosus). Blackberries are slightly sweeter and less acidic than dewberries; dewberries are larger and usually ripen a week to 10 sooner than blackberries.Click to see full answer. Similarly, it is asked, can you eat dewberries?Dewberries are common throughout most of the Northern Hemisphere and are thought of as a beneficial weed. The leaves can be used to make a herbal tea, and the berries are edible and taste sweet. They can be eaten raw, or used to make cobbler, jam, or pie.Likewise, do dewberries have seeds? The berries of dewberry plants are purplish red, similar to raspberries, and the seeds are much larger and tougher than those of the blackberry. Correspondingly, how do I identify dewberries? Description: Dewberry is a trailing woody vine with curved prickles, rooting at the cane tips. Young stems are green; older stems are brownish and woody. Flowers are in small groups or sometimes single, on long stems, white with whitish centers, the stems often subtended by a small leaf.How long does it take dewberries to ripen?Normally, dewberries begin to ripen about 6 weeks after the last freezing temperatures in an area, and continue to bear several weeks, unless drought or extreme heat causes them to become dormant. Find a location where you can pick .