{"id":101842,"date":"2022-08-31T23:22:49","date_gmt":"2022-09-01T03:22:49","guid":{"rendered":"http:\/\/burgerfinal.flywheelsites.com\/?p=101842"},"modified":"2022-08-31T23:22:51","modified_gmt":"2022-09-01T03:22:51","slug":"what-is-rose-rosette-disease-control-of-rose-rosette-and-witches-broom-in-rose","status":"publish","type":"post","link":"https:\/\/burgerfarms.com\/what-is-rose-rosette-disease-control-of-rose-rosette-and-witches-broom-in-rose\/","title":{"rendered":"What Is Rose Rosette Disease: Control Of Rose Rosette And Witches Broom In Rose"},"content":{"rendered":"\n
By Stan V. Griep Rose Rosette disease, also known as witches broom in roses, is truly a heartbreaker for the rose loving gardener. There is no known cure for it, thus, once a rose bush contracts the disease, which is actually a virus, it is best to remove and destroy the bush. So what does Rose Rosette disease look like? Keep reading for information on how to treat witches broom in roses.<\/p>\n\n\n\n What is Rose Rosette Disease?<\/strong><\/p>\n\n\n\n Exactly what is Rose Rosette disease and what does Rose Rosette disease look like? Rose Rosette disease is a virus. The effect it has upon the foliage brings about its other name of witches broom<\/a>. The disease causes vigorous growth in the cane or canes infected by the virus. The foliage becomes distorted and frazzled looking, along with being a deep red to almost purple in color and changing to a brighter more distinct red.<\/p>\n\n\n\n The new leaf buds fail to open and look a bit like rosettes, thus the name Rose Rosette. The disease is fatal to the bush and the longer one leaves it in the rose bed, the more likely it is that other rose bushes in the bed will contract the same virus\/disease.<\/p>\n\n\n\n Below is a list of some of symptoms to look for:<\/p>\n\n\n\n **Note<\/strong>: Deep red colored leaves may be totally normal, as the new growth on many rose bushes starts out with a deep red coloration and then turns to green. The difference is that the virus infected foliage keeps its color and can also become mottled, along with vigorous unusual growth.<\/p>\n\n\n\n What Causes Witches Broom in Roses?<\/strong><\/p>\n\n\n\n The virus is believed to be spread by tiny mites that can carry the nasty disease from bush to bush, infecting many bushes and covering much territory. The mite is named Phyllocoptes fructiphilus<\/em> and the type of mite is called an eriophyid mite<\/a> (wooly mite). They are not like the spider mite<\/a> most of us are familiar with, as they are far smaller.<\/p>\n\n\n\n Miticides<\/a> used against the spider mite do not appear to be effective against this tiny wooly mite. The virus does not appear to be spread by way of dirty pruners either, but only by the tiny mites.<\/p>\n\n\n\n Research indicates that the virus was first discovered in wild roses growing in the mountains of Wyoming and California in 1930. Since then it has been a case for much study at plant disease diagnostic labs. The virus has recently been placed into a group known as Emaravirus, the genus created to accommodate a virus with four ssRNA, negative sense RNA components. I won\u2019t go further into this here, but look up Emaravirus online for further and interesting study.<\/p>\n\n\n\n Control of Rose Rosette<\/strong><\/p>\n\n\n\n
American Rose Society Certified Consulting Rosarian<\/a> \u2013 Rocky Mountain District<\/p>\n\n\n\n