Evergreen

Rhododendron 'Fastuosum Flore Pleno'

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Rhododendron 'Fastuosum Flore Pleno' is a large evergreen shrub with light bluish-mauve, semi-double flowers from late spring into early summer. Its foliage provides year-round structure, while the bloom gives a sheltered planting area a distinct seasonal focus. Allow room for a mature height and spread of about 8–13 feet. Dappled shade and a protected site suit rhododendron guidance, especially where soil stays acidic, moist, and well drained. Place it where its eventual width will not crowd paths or smaller shrubs. Its mature size makes it better suited to a generous border than a narrow foundation bed. The plant is harmful if eaten.

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At a glance

Mature height: About 8–13 ft
Mature spread: About 8–13 ft
Light: Dappled shade
Hardiness: UK hardiness H6

The right plant, the right place

Make room for something good.

Its evergreen foliage provides year-round structure, with semi-double bluish-mauve flowers in late spring to early summer. Allow for a large shrub in a generous border.

Where to plant

Choose a protected spot with dappled shade. Leave space for a mature spread of about 8–13 feet.

Through the seasons

Light bluish-mauve, semi-double flowers appear from late spring into early summer. The foliage remains evergreen.

Southwest Washington gardens

Give it a good start.

Watch for root rot in poorly drained ground and lace bug stippling on leaves. Both are rhododendron problems; this cultivar's particular susceptibility is unknown.

Soil, drainage & water

Plant in acidic, moist but well-drained soil. Avoid poorly drained conditions associated with Phytophthora root rot.

A little care goes a long way

Growing well, season after season.

Check leaf undersides when stippling appears; hand removal or a strong stream of water can reduce lace bugs. Remove and destroy plants infected with Phytophthora root rot.

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