Evergreen
Nova Zembla rhododendron
Rhododendron hybrid 'Nova Zembla'
Nova Zembla brings bold red spring flower trusses above an upright, rounded evergreen shrub. At approximately 5 to 8 feet tall and wide, it can anchor a woodland border or provide a substantial flowering backdrop. Give the full shrub room rather than relying on frequent clipping. Its shallow roots need acidic, organic soil that retains moisture while draining freely. Part shade, mulch, and dependable summer water are useful priorities in Southwest Washington; saturated ground and harsh afternoon sun are not. Prune shortly after bloom if needed. Rhododendron plant parts are toxic if eaten, so consider browsing risks when placing it.
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At a glance
- Mature height
- 5–8 ft
- Mature spread
- 5–8 ft
- Light
- Partial shade
- Hardiness
- USDA Zones 4–8
The right plant, the right place
Make room for something good.
Works well in woodland borders, evergreen groupings, and loose screens. Its red flowers are prominent in spring, while the rounded shrub provides cover and structure for the rest of the year.
Where to plant
Allow 5–8 feet for both height and spread. Choose partial shade with protection from hot afternoon sun. Keep the shallow root area away from regular digging or cultivation.
Through the seasons
Large clusters of red flowers appear in spring. The foliage stays green year-round.
Southwest Washington gardens
Give it a good start.
Well suited to Northwest gardens with acidic soil and partial shade. Winter waterlogging and dry summer soil are common siting concerns, so check drainage and plan for dry-season watering.
Soil, drainage & water
Needs acidic, organically rich soil that stays moist but drains well. Mulch the shallow roots and water during dry spells. If the plant wilts while the soil is wet, check for root problems.
A little care goes a long way
Growing well, season after season.
Prune soon after flowering if shaping is needed. Removing spent flower clusters is optional. Avoid digging beneath the shrub, where its shallow roots are easily disturbed.
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.
Root rot
Wilting or dying shoots despite wet soil can indicate root or crown problems.
Help your plant thrive
Improve drainage before planting and avoid burying the crown too deeply. Check for compacted soil or excessive irrigation if the plant declines.
Lace bugs
Leaves may look stippled, pale, or bleached. Inspect their undersides for signs of feeding insects.
Help your plant thrive
Reduce heat and drought stress with suitable shade and regular watering. Confirm the pest before choosing a treatment.
Soil and exposure stress
Yellowing, scorched edges, or poor growth can result from alkaline soil, drought, excess sun, or disturbed roots.
Help your plant thrive
Check watering and exposure, and test soil before adding amendments. Mulch beneath the shrub and avoid cultivating around its roots.
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