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Rhododendron 'Ingrid Melquist'.
Photo: Jardin botanique de Montréal (Gilles Murray)

Blooms in April

Azalea

  • R. dauricum, 150 cm, purple flowers, semi-evergreen leaves

Rhododendron

  • R. mucronulatum, 150 cm, pink flowers, deciduous leaves

Blooms in early May

Azalea

  • R. canadense, hardy to zone 2, 90 cm, pink flowers, deciduous leaves

Rhododendrons

  • R. ‘April Rose’, 120 cm, pink flowers, small-leaf evergreen
  • R. ‘April Snow’, 120 cm, white flowers, small-leaf evergreen
  • R. ‘Balta’, 120 cm, white flowers, small-leaf evergreen
  • R. groenlandicum, hardy to zone 2, 90 cm, white flowers, semi-evergreen leaves
  • R. ‘Olga Mezitt’, hardy to zone 4, 150 cm, pink flowers, small-leaf evergreen
  • R. ‘P.J.M.’, hardy to zone 4, 150 cm, lavender fowers, small-leaf evergreen
  • R. ‘P.J.M. Black Satin’, hardy to zone 4, 150 cm, lavender flowers, small-leaf evergreen
  • R. ‘P.J.M. Elite’, hardy to zone 4, 150 cm, pink flowers, small-leaf evergreen
  • R. ‘P.J.M. White’, hardy to zone 4, 150 cm, white flowers, small-leaf evergreen
  • R. ‘Purple Gem’, 90 cm, purple flowers, small-leaf evergreen
  • R. ‘Ramapo’, 90 cm, violet flowers, small-leaf evergreen
  • R. ‘Weston’s Aglo’, hardy to zone 4, 150 cm, pink flowers, small-leaf evergreen

Blooms in late May

Azaleas

  • R. kaempferi, 120 cm, pink flowers, semi-evergreen leaves
  • R. ‘Karen’, 120 cm, purple flowers, semi-evergreen leaves
  • R. ‘Palestrina’, 120 cm, white flowers, semi-evergreen leaves
  • R. schlippenbachii, 150 cm, pink flowers, deciduous leaves
  • R. yedoense, 120 cm, violet flowers, semi-evergreen leaves

Rhododendrons

  • R. ‘Anna H. Hall’, 150 cm, white flowers, medium-leaf evergreen
  • R. ‘Boule de Neige’, 150 cm, white flowers, large-leaf evergreen
  • R. carolinianum, 120 cm, pink flowers, medium-leaf evergreen
  • R. ‘Elviira’, hardy to zone 4, 100 cm, red flowers, medium-leaf evergreen

Blooms in early June

Azaleas

  • R. ‘Golden Lights’, hardy to zone 4, 150 cm, yellow flowers, fragrant, deciduous leaves
  • R. ‘Joe Paterno’, 150 cm, white flowers, large-leaf evergreen
  • R. ‘Northern Lights’, hardy to zone 4, 150 cm, pink flowers, fragrant, deciduous leaves
  • R. ‘Orchid Lights’, hardy to zone 4, 150 cm, pink flowers, fragrant, deciduous leaves
  • R. ‘Rosy Lights’, hardy to zone 4, 150 cm, pink flowers, fragrant, deciduous leaves
  • R. ‘Spicy Lights’, hardy to zone 4, 150 cm, salmon flowers, fragrant, deciduous leaves
  • R. ‘White Lights’, hardy to zone 4, 150 cm, white flowers, fragrant, deciduous leaves

Rhododendrons

  • R. ‘Crete’, 120 cm, violet, medium-leaf evergreen
  • R. degronianum ssp. yakushimanum, 120 cm, white flowers, medium-leaf evergreen
  • R. degronianum ssp. yakushimanum ‘Mist Maiden’, 120 cm, pinkish white flowers, medium-leaf evergreen
  • R. ‘Haaga’, hardy to zone 4, 150 cm, pink flowers, large-leaf evergreen
  • R. ‘Hellikki’, 150 cm, pink flowers, large-leaf evergreen
  • R. ‘Helsinki University’, 200 cm, pink flowers, large-leaf evergreen  
  • R. ‘P.M.A. Tigerstedt’, 200 cm, white flowers, brown, large-leaf evergreen
  • R. ‘Pohjola's Daughter’, 100 cm, white flowers, large-leaf evergreen

Blooms in late June

Rhododendrons

  • R. catawbiense, 150 cm, white flowers, large-leaf evergreen
  • R. ‘English Pinkum’, 150 cm, pink flowers, large-leaf evergreen
  • R. ‘Nova Zembla’, 150 cm, red flowers, large-leaf evergreen
  • R. ‘Pinkum Elegans’, 150 cm, pink flowers, large-leaf evergreen

Blooms in July

Rhododendrons

  • R. brachycarpum, 150 cm, white flowers, large-leaf evergreen
  • R. maximum, 150 cm, white flowers, large-leaf evergreen

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