bud union - Knowledgebase Question

albany, Ne
Question by reflint1
April 4, 2009
what is the bud union on the rose bush

Answer from NGA
April 4, 2009


Most hybrid roses are grafted onto a vigorous root stock. This graft is called the bud union and it is usually just above the roots. You can identify it because it is a swollen area on the main stem. A bud union is more frost sensitive than the top or the roots of a rose so it's a good idea to plant a rose with the bud union buried in the soil, or to protect the bud union with mulch over the winter months. Hope this answers your question!

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