A . There are two kinds of thornless roses : those that have always been thorn-free, and those bred for thornlessness.
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CLOSE UP : The Sterling is a nearly thornless hybrid tea rose developed in 1957 from two other roses, Peace and an unnamed seedling.
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"You're looking for a relatively high acid flavor, " says Summerfield, who grows both thorny and thornless blackberry varieties.
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Skirvin and his colleague Ken McPheeters recently patented what they said was a truly thornless blackberry that produces fruit as sweet as those found in the wild.
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You're likely to find that spring brings the heaviest blooms and fruit, but the thornless lime will continue to bloom anytime it is warm.
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Thornless roses are marked with a " t, " so if you are patient, you can page through the list for many possibilities.
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Using tiny pieces of the thornless skin of the Evergreen blackberry, they have genetically engineered a new variety, which they call " Everthornless ."
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"It's a pure thornless plant _ one that never, ever sends up thorny shoots, " said McPheeters, a research specialist in agriculture.
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Recently, the cultivar'Cacanska Bestrna'( also called'Cacak Thornless') has been developed in Serbia and has been planted on many thousands of hectares there.
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Tasks included removing fencing, building a creekside trail, removing evergreen thornless blackberries that formed thickets more than ten feet high and spanned the creek, and establishing native vegetation.
