User:Erica Zhou/draft

Knock Out® Rose

= Knock Out® Roses =

Knock Out® Rose is an artificial hybrids and cultivars rosales. It mainly appears in garden, balcony as an ornamental plant. It has the characteristics of drought tolerance, self-cleaning, disease resistance, cold-tolerant and multiple-blooming nature. Knock Out® Rose grows 3 to 5 feet tall and wide generally, suit in and widely grown from USDA Zone 5 to Zone 9. Currently there are 10 kinds of Knock Out® Rose have been crossed. 

Description
Knock Out® Rose is a species of low-growing shrub Rosales. It is hybrided by crossing two tea rose varieties, 'Carefree Beauty' and 'Razzle Dazzle' roses. Knock Out® Rose be classified as a modern species roses due to it was introduced in 1999. The same to normal rose, Knock Out® Rose has serrated margin leaves and flower which borne on the stem. Different from the delicate and complex care process of ordinary roses, Knock Out® Rose famous for it's easy care characteristics including self-cleaning, drought tolerance, disease resistance (such as black spot and powdery mildew) and cold tolerance. However, to achieve these advantages, Knock Out® Rose sacrifice fragrance.

Accoring different varieties, Knock Out® Rose can be red, yellow, white, pink and orange. It generally can grow three to five feet tall shrub and similarly as wide. And it's rose buds usually about 3-inch large.

Knock Out® Rose also has a high degree of adaptability to grafting.

Varieties
Up to 2019, the family of Knock Out® Rose have 10 members. * Zone is point to USDA Hardiness Zone.

Distribution and habitat
Because of the sales area restrictions, most Knock Out® Roses be planted at the United States from zone 5 to 9, some cultivars can grow in Zone 4,10,11.

Knock Out® Roses have a certain demand for sun. The place that plant these roses should have at least six to eight hours sun banning every day.

As for soil, due to the feature of high tolerate of drought, Knock Out® Roses do not have high requirement. But moist, good air movement and well-draining soils between pH 6.0 and pH 6.5 will be more conducive to the growth of roses.

Life cycle
As an artificial ornamental cultivars, the flowering period of Knock Out® Rose is long and multiple-blooming. All kind of Knock Out® Rose can blossom through the summer months. In a milder climate area (such as USDA Hardiness Zone 4-9), roses can bloom from spring to the begining of winter. In the Coastal and Tropical South, Knock Out® Rose can flowering whole year.

Pests and diseases
Although Knock Out® Rose is known for its multiple disease resistance, it still threatened by pests and diseases.

Rose rosette virus
Rose rosette virus (Hereinafter referred to as RRV) is a rose disease that cause and spread by small eriophyid mite. It mainly appear in the East and Midwest of the United State and also parts of the South.

The characteristics of Rose rosette virus (Hereinafter referred to as RRV) are rapid growth of branches and severe thorn proliferation. Knock Out® Rose infected with RRV will grow small twisted leaves and redden, branches dying, plant stunting and turn severe yellow. RRV will cause roses' death within one to two years.

The cure of RRV hane not be found. Observe carefully, early identification then destroy the infected plants is the best way at the moment. In the early stages of viral infection, cut the bright-red shoot clusters including connected healthy green wood can work. But once the rose buds be infected, the roots, stems, rose and all should be removed immediately.

=
Downy Mildew =====

Animals
====Spider mites ====

XXpire WG Specialty Insecticide
== History == William Radler created Knock Out® Roses in 1999. The fragile and difficult of taking care of odinary rose inspired him to create a kind of easier care rose. As he said“Fixing roses was one of my first goals.”

Cultivation
Knock Out® Rose compare other roses is lower maintenance required. The self-cleaning feature let gardeners not need to worry about dead-heading as they will fall off by themselves.

Awards
All-America Rose award in 2000.

Comment
“Not everyone accepts it as being a rose.”—— Reiland of the American Rose Society.