different colors on the same plant - Knowledgebase Question

leona, Te
Question by bobdi
April 24, 2010
this is just i wonder why? we have several rose bushes, one has always bloomed yellow and turned white, but we now have one that for the last three years has been a vivid pink and how has also has a velvet red bloom. why is this?

Answer from NGA
April 24, 2010


There may be two different things going on here. It sometimes happens that yellow roses will fade to white during the summertime. The sun can bleach the color out and instead of remaining yellow, the flowers will fade to white. The only other explanation, and this one really seems to fit your pink rose, is that the rootstock has overtaken your rose. Roses are often grafted onto a different (more hardy) rootstock. The rootstock is quite vigorous and sometimes growth from below the graft is vigorous enough that it overtakes the grafted part. What you are seeing are probably the flowers from the rootstock rather than the grafted rose. You can examine the shrub to see if anything is still growing from above the graft. If so, cut off anything that is coming from below the graft and allow only the grafted part of your rose bush grow. Hope this sheds some light on the subject.

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