J. R. Byfield

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Specifications

Registration & Introduction

Registered Name:J. R. Byfield
Cultivar Group: Climbing Hybrid Tea (Cl HT)
Breeder/ Raiser Name:Alister Clark
Registration Year:1941
Parentage:
Country Of Origin:Australia
Introduction/s:Introduced in Australia by Hazlewood Bros. Pty. Ltd. in 1941 as ‘J. R. Byfield’.
Registration and introduction information for the rose cultivar of J. R. Byfield.

Characteristics

Flower Color:dark red
Flower Fragrance:soft fragrance
Petal Structure:undefined petal structure
Bloom Shape:undefined bloom shape
Bloom Size:large
Bloom Repeat:repeat flower
Growth Habit:climbing
Growth Height:medium
Growth Width:medium
Thorns:thorned
Characteristics of growth to identify the rose cultivar of J. R. Byfield.

Health

Disease Resistance:unknown disease resistance
Cold Hardiness:medium cold hardiness
USDA Zone:6b (-5 to 0 °F/-20.6 to -17.8 °C), 7a (0 to 5 °F/-17.8 to -15 °C), 7b (5 to 10 °F/-15 to -12.2 °C), 8a (10 to 15 °F/-12.2 to -9.4 °C), 8b (15 to 20 °F/-9.4 to -6.7 °C), 9a (20 to 25 °F/-6.7 to -3.9 °C), 9b (25 to 30 °F/-3.9 to -1.1 °C), 10a (30 to 35 °F/-1.1 to 1.7 °C), 10b (35 to 40 °F/1.7 to 4.4 °C), 11a (40 to 45 °F/4.4 to 7.2 °C), 11b (45 to 50 °F/7.2 to 10 °C), 12a (50 to 55 °F/10 to 12.8 °C), 12b (55 to 60 °F/12.8 to 15.6 °C), 13a (60 to 65 °F/15.6 to 18.3 °C), 13b (65 to 70 °F/18.3 to 21.1 °C)
Shade Tolerance:unknown shade tolerance
Health information to match planting conditions suitable for growing the the rose cultivar of J. R. Byfield.