Common Name: hybrid multiflora rose
Type: Deciduous shrub
Family: Rosaceae
Zone: 5 to 8
Height: 5.00 to 8.00 feet
Spread: 4.00 to 6.00 feet
Bloom Time: May to June
Bloom Description: Creamy yellow
Sun: Full sun to part shade
Water: Medium
Maintenance: Medium
Suggested Use: Naturalize
Flower: Showy, Fragrant, Good Cut
Attracts: Butterflies
Other: Thorns
Tolerate: Erosion
Culture
Best grown in medium moisture, slightly acidic, well-drained garden loams in full sun to part shade. Best flowering and disease resistance generally occur in full sun, however. Water deeply and regularly (mornings are best). Avoid overhead watering. Good air circulation promotes vigorous and healthy growth and helps control foliar diseases. Summer mulch helps retain moisture, keeps roots cool and discourages weeds. Remove spent flowers to encourage rebloom. Crowns need winter protection in cold winter areas such as St. Louis. Remove and destroy diseased leaves from plants, as practicable, and clean up and destroy dead leaves from the ground around the plants both during the growing season and as part of a thorough cleanup during winter (dormant season). Prune as needed in late winter to early spring.
TRIER can self-seed.
Noteworthy Characteristics
Rosa is a genus of about 150 species of deciduous (occasionally evergreen) shrubs and climbers noted for their beautiful, often fragrant, single, semidouble or double flowers which are borne singly or in clusters on often prickly stems clad with 5-9 leaflets often having toothed margins.
Shrub roses are usually large-growing bushes between 4-10 feet tall and as wide. They are a very diverse group of hybrids and usually produce clusters of flowers several times a year but some may bloom just once in spring. They do not require the heavy pruning required of hybrid tea, floribunda and grandiflora roses unless being pruned to control size. Plants can be allowed to grow large with minimal pruning.
Genus name comes from the Latin name for rose.
TRIER, a hybrid multiflora rose, was introduced into cultivation in Germany in 1904 and is usually grown as an upright shrub. May be trained as a climber. As a shrub, it will reach a height of up to 8' with a spread of 6'. Features very tiny leaves and clusters of single, small, creamy yellow flowers. Flowers are slightly fragrant. A repeat bloomer. Small, red rose hips form in August and last into winter. Frequently used as a parent in the hybridization of other roses such as musk roses. Graham Stuart Thomas considers this rose to be "an important parent, but uninteresting horticulturally."
Problems
Roses are susceptible to a large number of diseases, the most common of which are black spot, powdery mildew, rust and rose rosette. Although good cultural practices are the first line of defense in disease control, regular preventative fungicide applications throughout the growing season are usually required, particularly in humid climates with regular rainfall such as the St. Louis area. Potential insect problems include aphids, beetles, borers, scale, thrips, rose midges, leafhoppers and spider mites. Local rose associations and extension services are usually able to offer specific recommendations and advice for selecting and growing roses.
Uses
May be used in the naturalized garden or wild garden or may be planted to stabilize embankments, banks or hills.