Rhododendron Hybrids / cultivars

Gallery name starting with: 12ABCDEFGHIJKLMNOPQRSTUVWXYZHOME to hirsutum.info

Rhododendron 'Hardgrove's Royal Star'

Hybridiser:Hardgrove, D.L., 1962 (see more plants of this hybridizer)
Status:IRRC registered.
Synonyms:'Royal Star'
The figures listed here are averages.

The exact location (altitude, sunlight, soil, climate) can influence growth considerably
in 10 years
200 cm. (7ft.)
Bloom time:lateFlower:openly funnel-shaped
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)

In 'Your Garden' you can administrate
your rhododendrons.

To try/see this go 'Home' (top-right).
on hirstum.info: 1
R. Hardgrove's Royal Star per country:
(could be a clue for heat/cold-tolerance)

United States : 1

'Moser's Maroon'   Click to see more information


Rhododendron 'Hardgrove's Royal Star' photos

Photo byJim Willhite
Locationprivate garden Berwyn, PA, USA
Date15 May, 2012
See high-resolution picture
Photo byJim Willhite
Locationprivate garden Sandwich, MA,USA
Date02 June, 2007
See high-resolution picture

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Rhododendron cultivars   Hirsutum.info     Project started 03 June 2009