Rhododendron Hybrids / cultivars

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Rhododendron 'Helen Johnson'

Hybridiser:Ostbo, E.. Bellevue, Washington, USA, 1956 (see more plants of this hybridizer)
Status:IRRC registered.
Height
Height
The figures listed here are averages.

The exact location (altitude, sunlight, soil, climate) can influence growth considerably
in 10 years
150 cm. (5ft.)
Bloom time:late midseasonFlower:unknown
Type:elepidoteLeaves:unknown
Hardiness:
H0 = 0 C (32 F)
H1 = -7 C (20 F)
H2 = -12 C (10 F)
H3 = -15 C (5 F)
H4 = -18 C (0 F)
H5 = -24 C (-10 F)


Seed-parentPollen-parent
'Mrs Furnivall'   Click to see more information

X'Mrs Donald G. Graham'   Click to see more information

?x? 'Corona x griersonianum'   Click to see more informationx'Loderi Group'   Click to see more information

'Corona'   Click to see more information

xR. griersonianum   Click to see more information

R. griffithianum   Click to see more information

xR. fortunei ssp fortunei   Click to see more information



Rhododendron 'Helen Johnson' photos

 
Photo byDennis McKiver
LocationPrivate garden, Fort Bragg, CA, USA
Date12 May, 2012
See high-resolution picture




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Rhododendron cultivars   Hirsutum.info     Project started 03 June 2009