Evergreen

Ramapo rhododendron

Rhododendron 'Ramapo'

Rhododendron 'Ramapo' is a compact, mounded evergreen with small violet-purple flowers in spring and blue-gray new leaves that darken through winter. It generally reaches 1–3 feet tall and 2–4 feet wide; a ten-year height estimate of about 16–24 inches is an interim size, not its mature limit. Its low profile suits containers, small gardens, and the front of a border, with room for its eventual width. In Southwest Washington, give it full sun to partial shade and acidic, moist but well-drained soil. Check moisture during dry summers and avoid sites that stay saturated in winter. Flowers can draw bees and hummingbirds.

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At a glance

Mature height
Generally 1–3 ft
Mature spread
Generally 2–4 ft
Light
Full sun to partial shade
Hardiness
H6 (UK hardiness rating)

The right plant, the right place

Make room for something good.

Place this low, mounded evergreen in a container, small garden, or the front of a border. Allow for an eventual spread of about 2–4 feet.

Where to plant

Choose full sun to partial shade. A partially shaded site may reduce the lace bug pressure associated with sunnier rhododendron plantings.

Through the seasons

Small violet-purple flowers appear in spring. New blue-gray to blue-green foliage darkens in winter.

Southwest Washington gardens

Give it a good start.

In Southwest Washington, monitor rhododendrons for lace bug damage, especially on sunny sites. Avoid winter-saturated soil, which raises concern for root rot.

Soil, drainage & water

Grow in acidic, moist but well-drained soil. Check moisture during dry summer periods, and avoid ground that stays saturated in winter.

A little care goes a long way

Growing well, season after season.

If pruning is needed, do it after flowering. Check leaf undersides when you inspect the shrub for pests.

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.

Rhododendron lace bug

Pale stippling on leaf tops and dark, crusty deposits underneath; repeated infestations can yellow the foliage.

Help your plant thrive

Check leaf undersides, especially on sunny sites. Remove insects with a strong stream of water directed underneath the leaves.

Phytophthora root rot

Stunted growth, yellowish-green leaves, wilting, branch dieback, and rotting roots.

Help your plant thrive

Plant disease-free material in well-drained soil. Remove infected plants and clean up affected material to limit spread.

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