Azalea x 'DOROTHY HAYDEN'

Azalea x
Azalea x 'DOROTHY HAYDEN'
Robin Hill azalea
SIZE/TYPE low or groundcovering
USUAL HEIGHT 0.3-0.8m
USUAL WIDTH
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS white
BLOOMING TIME May - June
LOCATION semi-shade to shade
USDA zone (lowest) 6   (down to -23°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Rhododendrons, azaleas, and mountain laurels
Evergreen broadleaf
náhled fotonáhled fotonáhled foto
These hybrid azaleas come from New Jersey, USA, and were developed by Robert Gartrell. The aim was to select and further breed cultivars with the best performace, extending their flowering period and keeping majority of leaves in winter months.

Dorothy Hayden has large, pure white, funnel-shape flowers that open from end May until late June. They pop up continuously unlike early Japanese azaleas that cover the whole plant with a mass of flowers. It grows slowly making a compact, low shrub does not need to be pruned.

Evergreen leaves are mid green, ovate, medium-small. In semi-shade and shade they are evergreen, but still less sensitive to sun than other Japanese azaleas.

Japanese azaleas can be clipped to shapes in early June. If so, do not use fertilizers enhancing growth rate. The size of new branches would get out hand and spoil the shape you are going to achieve. They need light, permeable soil that is acid, constantly moist (keep azaleas mulched at all times) and moderately fertile. Use fertilizers for rhododendrons and azaleas, or ericaceous plants. The best soil mix is 1/3 of peat, 1/3 of leaf-mould or lime-free compost, and 1/3 of soil from the hole where you are going to plant it. Azaleas have shallow roots, so do not plant not too deep. They are fully hardy to about -24°C (USDA zone 6).

Last update 22-06-2010.
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Azalea x
GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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