Rosa 'Radsunny' [sold as Sunny Knock Out®]
Sunny Knockout Rose

Family:

Rosaceae (Rose Family) 211

Genus:

Rosa (Rose) 26

Plant Type:

Shrub 468

Growth Forms:

Bushy 187

Hardiness:

USDA Zone 4 520

Deciduous / Evergreen:

Deciduous 839

Flower Notes:

Yellow (Bright yellow buds open to 3" diameter, single, cream-white flowers)

Foliage Notes:

Green (Green lustrous, deep green summer foliage); Purple (Handsome deep purple fall color)

Ultimate Height:

3-4 feet

Ultimate Spread:

3-4 feet

Light Requirements:

Sun

Soil Notes:

Slightly acidic, moist, well-drained soils with a layer off mulch; drought tolerant once established

Range:

Cultivated Origin

Diagnostic Characteristics:

Deep mossy green with blue and maroon highlights and a maroon underside – distinct glaucous appearance

Purdue Plant Doctor

Parts and Problems of Rose

Special Characteristics:

Flowering Characteristics 285

Mass Plantings 288

Drought Tolerant 289

Fast Growth Rate 229

When Rosa 'Radsunny' [sold as Sunny Knock Out®] has been observed flowering or fruiting at Purdue University

Flowering

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Week 1 flowering not present	Week 2 flowering not present	Week 3 flowering not present	Week 4 flowering not present	Week 5 flowering not present	Week 6 flowering not present	Week 7 flowering not present	Week 8 flowering not present	Week 9 flowering not present	Week 10 flowering not present	Week 11 flowering not present	Week 12 flowering not present	Week 13 flowering not present	Week 14 flowering not present	Week 15 flowering not present	Week 16 flowering not present	Week 17 flowering not present	Week 18 flowering not present	Week 19 flowering not present	Week 20 flowering not present	Week 21 flowering not present	Week 22 flowering not present	Week 23 flowering not present	Week 24 flowering not present	Week 25 flowering not present	Week 26 flowering not present	Week 27 flowering present	Week 28 flowering present	Week 29 flowering present	Week 30 flowering present	Week 31 flowering present	Week 32 flowering present	Week 33 flowering present	Week 34 flowering not present	Week 35 flowering not present	Week 36 flowering not present	Week 37 flowering not present	Week 38 flowering not present	Week 39 flowering not present	Week 40 flowering not present	Week 41 flowering not present	Week 42 flowering not present	Week 43 flowering not present	Week 44 flowering not present	Week 45 flowering not present	Week 46 flowering not present	Week 47 flowering not present	Week 48 flowering not present	Week 49 flowering not present	Week 50 flowering not present	Week 51 flowering not present	Week 52 flowering not present

No Fruiting Observations Available

15 Rosa 'Radsunny' [sold as Sunny Knock Out®] found

Building Map...

= Heritage plant = Memorial plant

Number	Accession ID	Location
1	2018_01080*A	UNIV
2	2018_01081*A	UNIV
3	2015_00576*B	DLR
4	2017_00337*E	KRAN
5	2015_00576*A	DLR
6	2015_00576*C	DLR
7	2015_00563*A	HOCK
8	2017_00337*D	KRAN
9	2017_00337*A	KRAN
10	2014_00089*A	HOCK
11	2015_00571*A	DLR
12	2017_00337*C	KRAN
13	2015_00566*A	DLR
14	2015_00571*B	DLR
15	2015_00568*A	DLR

Other plants like this Rosa 'Radsunny' [sold as Sunny Knock Out®] (Sunny Knockout Rose)

The Purdue Arboretum is a collaboration between the Department of Horticulture and Landscape Architecture and Physical Facilities Grounds Department

Purdue Arboretum, 625 Agriculture Mall Dr, West Lafayette, IN, 47907

© 2026 Purdue UniversityAn equal access/equal opportunity universityCopyright ComplaintsMaintained by Purdue Arboretum Explorer

Contact Purdue Arboretum at arboretum@purdue.edu for accessibility issues with this page | Accessibility Resources | Contact Us