The everyday colour
Pink is probably what most people picture when they think of a rhododendron. 'Pink Pearl' is a vigorous old hybrid with large trusses of pink that fade towards white, and 'Cynthia' is a taller, rosier plant. These are solid performers for larger gardens, and cover wide beds in May.
Pink rhododendron or azalea?
Botanically, azaleas are rhododendrons too. Evergreen azaleas are smaller, usually sold in pots, and flower earlier, while deciduous ones shed their leaves. Searches for "rhodo flower" often turn out to be azaleas in a shop.
Planting hints for Irish weather
- A site with dappled shade and shelter from westerly wind is best.
- Choose a variety that suits the size of the plot, as some reach several metres.
- Plant shallowly into acid ground; lime-heavy soils will turn the leaves yellow.
- In a pot, use ericaceous compost and rainwater where possible.
Seasonal colour
The main show comes in April and May. The Irish climate is mild enough for many pinks to bloom earlier on the south and west coasts than in the east.
Facts about poison
Rhododendrons produce grayanotoxins in all parts. The ASPCA considers them toxic to dogs, cats and horses, and signs include vomiting, drooling, weakness and, in severe cases, collapse. Humans can be affected by honey made from the nectar. If someone has swallowed leaves, contact the National Poisons Information Centre, and for a pet, ring your vet.
