Bleu Magenta rose is a cultivar of an old fashioned Multiflora rose dating back to the 19th century. It is considered one of the five blue ramblers, as each has blue undertones in the deep pink, violet or reddish-purple blooms. Bleu Magenta has a rambling growth form meaning that it is a fast grower and will spread, sprawl and gently climb if provided some support. Bleu Magenta has the typically small rambler flowers that appear in June grouped in clusters at the ends of long sturdy canes that are one year old.
Plant your Bleu Magenta rambler in full sun to light dappled shade exposure and in nutrient-rich, moist soil. Amend poor soil with large amounts of well-aged livestock manure and good quality compost before planting, and top dress the roots of established ramblers with the same each year in the spring or fall.
Water your rambler rose to maintain evenly moist soil at all times. Water slowly and deeply so as not to splash up water on the foliage or canes. Apply at least 1-inch of water each week and more in dry or hot climates. Never allow the soil to dry out beyond an inch or two down.
Prune your Bleu Magenta rose in the summer immediately following bloom to prevent removal of the next years flower buds. Remove all canes that bloomed in the current year down to the crown of the plant. Pull them out of the canopy, and mulch and compost or discard them.
Feed your rambler rose at least twice per year in the spring and mid-summer with an organic rose fertilizer formulation, such as rose tone or fish emulsion. Apply according to the label dosing directions, and repeat as advised. A fall feeding should be given when growing your rambler in temperate or warm climates where hard frost and cold damage is not an issue.