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Evergreen

Jean Marie de Montague rhododendron

Rhododendron 'The Hon. Jean Marie de Montague'

Rhododendron 'The Hon. Jean Marie de Montague' brings scarlet red flower clusters to the spring garden while its broadleaf evergreen foliage gives beds structure through winter. In Southwest Washington, it suits a woodland edge, shrub border, or a spot where one spring flowering shrub can stand out. Expect about 6 feet of height after ten years, with mature plants reaching about 8 feet tall and roughly 6 to 8 feet wide. Give it full sun to light shade in an acidic, well-drained bed. Keep the shallow roots evenly moist, mulch the soil, and leave enough room for its eventual spread.

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At a glance

Mature height
About 8 ft
Mature spread
Roughly 6–8 ft
Light
Full sun to light shade
Hardiness
About -5°F

The right plant, the right place

Make room for something good.

Its evergreen foliage can anchor a shrub border or woodland edge. The scarlet spring flowers also make it suitable as a single focal shrub.

Where to plant

Allow roughly 6 to 8 feet for its eventual width. Choose a site with full sun to light shade and room for the roots to remain undisturbed.

Through the seasons

Scarlet red flower clusters appear in spring. Broadleaf evergreen foliage remains through winter.

Southwest Washington gardens

Give it a good start.

This cultivar is suited to maritime Northwest gardens. In Southwest Washington, pay particular attention to drainage and watch for lace bug damage on foliage.

Soil, drainage & water

Plant in rich, acidic, well-drained soil. Water regularly to keep the root area moist without saturating it.

A little care goes a long way

Growing well, season after season.

Mulch over the shallow roots and avoid digging near the plant. Remove spent flower clusters after bloom where practical.

Know what to look for

Common growing concerns.

Symptoms can have more than one cause. These notes are a starting point for observing your plant and improving its growing conditions.

Phytophthora root rot

Stunted growth, yellowing, wilting, and branch dieback may develop.

Help your plant thrive

Plant in well-drained acidic soil and keep roots moist without leaving them saturated.

Rhododendron lace bug

Feeding leaves foliage stippled, yellowed, and weak-looking.

Help your plant thrive

Check leaf undersides regularly, especially on stressed plants, and use local pest guidance if damage increases.

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