Why Do Some Roses Have More Thorns Than Others

A: The first possible cause of suddenly excessive thorn production is rose rosette. This disease is caused by a virus. Unfortunately, there’s no cure, and the plants that have this problem will die within a year or two.

Which roses have the most thorns?

Rugosa Roses for Hedges Originally from Asia, Rugosa roses (Rosa rugosa) are among the hardiest options available. These plants grow and bloom vigorously throughout spring and summer, sporting medium-sized fragrant flowers, wrinkled leaves and dense thorns on all the stems.

Should you remove thorns from roses?

Every wound on the stem of roses leads to major vase contamination and deterioration of the stem bark, and it can even lead to bent-neck. Roses with thorns therefore last longer in the vase compared to those which have been removed. … If you have to, remove the thorns with as little damage to the tissue as possible.