Tree roses, also called standard roses, are bush roses that have been budded onto a tall stem or trunk. Tree roses grow up to 4 feet tall.
Tree roses can be grafted from almost any rose variety. The most common types are hybrid tea, grandiflora and floribunda. Hybrid tea roses bloom on single stems and come in a vast array of colours. Floribunda roses are short, hardy bush roses that bloom in clusters. Grandiflora roses are like hybrid tea roses in their plant height and popularity as cut flowers, but have several blooms per stem and bloom more frequently than hybrid tea varieties.
Prune tree roses according to the type of rose that is grafted onto the stem. Varieties that bloom only once per season should be pruned after flowering. Varieties that bloom repeatedly should be pruned during their dormant season.
Roses grow best in full sun and well-drained acidic soil with a pH between 5.5 and 7.0. Amend soil with organic matter prior to planting to encourage drainage and help prevent iron deficiency. Mulch after planting to a depth of 2 to 4 inches.