Rhododendron rex seeds (King Rhododendron)


14 in stock


King Rhododendron is perhaps  the hardiest of the big-leaf types.  Blooms April-May in dense clusters.  Flowers emerge from buds a bright pink then quickly fade to near white when fully open to reveal dark purple spots and a dark purple blotch.  Absolutely exotic with its long narrow dark green leaves with a rich bronze  indumentum.

  • Seed Count: 25-30
  • Collection Date: Dec 2020
  • Hardiness Zone: 6-9
  • Height and Width:  12m x 10m
  • Habitat: dappled shade, humus rich very well draining acidic soils.
  • Family: Ericaceae

How to germinate Rhododendron rex seeds:

Rub peat moss through a 4mm screen to create fine lump free milled peat moss. Add 20/30 filter sand (10% content max) and greensand at 1 tbsp/gallon of medium). Moisten, blend well and fill pots/flats/WHT, tamp firm. Sprinkle seeds thinly on medium surface. Mist well. Give gentle warmth (20-25C). Lightly mist daily. Provide strong indirect light. Clear plastic cover helps maintain humidity and enhance germination /seedling survival by not letting medium desiccate. Seeds should germinate in 10 days. Never let seedlings nor medium dry out nor over water.  Prick out when large enough to handle into individual pots and grow on. Shallow rooted. Be warned seedlings have very fine hair like roots and can damage easily. Have pots ready to receive when transplanting to avoid roots from drying out

Additional information

Weight 3 g