Botanical profile

Rhododendron 'Helsinki University'

Latin name
Rhododendron 'Helsinki University'
Common name
Rhododendron 'Helsinki University'
Type
Shrub
Family
Ericaceae

Rhododendron ‘Helsinki University’ is a very hardy evergreen shrub, selected for its ability to flower profusely despite harsh winters. This cultivar develops a rounded bushy habit and produces, in late spring, large bright pink flowers with orange-red markings, forming spectacular clusters that attract bees and butterflies. Its glossy dark green foliage, sometimes tinged with red when emerging, provides a decorative presence all year round, even outside the blooming period. Thanks to its exceptional hardiness down to -34 °C, it is perfectly suited to Nordic climates and is an excellent choice for flowerbeds, shady borders, or flowering hedges. It prefers acidic, rich, and well-drained soils, as well as full sun or partial shade for optimal flowering.

Care guide

Growing conditions

Light, soil, water and hardiness

Hardiness zone
Zone 5
Exposure
Sun to partial shade
Watering
Moderate
Fertilization
Fertilizer for acid-loving plants in spring
Soil type
Acidic, rich, well-drained
Minimum temperature
-35 °C (-31 °F)
Plant appearance

Blooming, foliage and shape

Blooming period
Spring
Flower color
Pink with orange-red spots
Fruiting
Dry, rather plain capsules
Foliage color
Dark green (young shoots tinged with red)
Foliage type
Persistent
Shape
Bushy / rounded
Garden structure

Size and growth

Height
6 ft (1.8 m)
Width
4 ft (1.2 m)
Growth rate
Moderate
Not recommended for pets
Not recommended for pets

Pets

Butterflies
Plants that attract butterflies

Butterflies

The availability of our plants varies depending on arrivals, seasons, nursery production and supplier availability. Some varieties may be offered for a limited time only, depending on their natural cycle or current stock. These plant profiles are designed to guide and inspire you when choosing plants for the garden, landscaping projects, containers or long-lasting outdoor arrangements.