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Martha Keller is a white Polyantha (Pol) shrub rose with undefined fragrance. It’s high-centered blooms repeat flower and may grow to a size of medium. The petal structure presents as double, 16-25 petals in three or more rows. This thorned rose has an average height of medium and width of medium.
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Registered Name: | Martha Keller |
Cultivar Group: | Polyantha (Pol) |
Breeder/ Raiser Name: | Louis (Ludwig) Walter |
Registration Year: | 1912 |
Parentage: | Bébé Leroux Hélène Videnz |
Country Of Origin: | France |
Introduction/s: | Introduced in Germany by Felberg-Leclerc in 1912 as ‘Martha Keller’. |
Flower Color: | white |
Flower Fragrance: | undefined fragrance |
Petal Structure: | double, 16-25 petals in three or more rows |
Bloom Shape: | high-centered |
Bloom Size: | medium |
Bloom Repeat: | repeat flower |
Growth Habit: | shrub |
Growth Height: | medium |
Growth Width: | medium |
Thorns: | thorned |
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) |
Shade Tolerance: | unknown shade tolerance |
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