| Description | A cultivar of the Northern Lights series of Rhododendron with lemon yellow flowers. |
|---|---|
| Pronunciation | (roo-do-DEN-dron) |
| Plant Type | All Plants, Shrubs Deciduous |
| Hardiness Zone | (4)5 |
| Sunlight | full sun to partial sun |
| Moisture | average to moist, water during dry periods |
| Soil & Site | organic soil, acid ph of 4.0-5.5 |
| Temperature | flower bud hardiness from -30 to -40 degrees |
| Flowers | yellow |
| Leaves | deciduous |
| Roots | shallow root system |
| Dimensions | can reach 5 feet |
| Maintenance | I like to dig a large hole, not to deep and mix the soil with 50% peat moss or compost. Plant in a slight mound for good drainage. Add a cup or two of Ammonia sulfate (or an other acid producing fertilizer)add some regular fertilizer. Water in good and keep moist. Mulch will help to slow down the loss of water. I like to add acid fertilizer in the fall and spring. Also you can use a liquid acid fertilizer such as Mir-acid. Any pruning should be done right after flowering. |
| Cultivar Origin | From a cross between Rhododendron x kosteranum and Rhododendron prinophyllum, became available commercially in 1978 from the University of Minnesota. |
| Misc Facts | Although the different cultivars are not from the same parents, they are all listed under the Northern Lights Series. |
| Author's Notes | For the best results follow the cultural rules listed above. Also give them some time. Most potted plants you can buy in the stores are not real full. |
| Notes & Reference | Azaleas and Rhododendrons for Minnesota by Michael Zins, Assistant Professor, University of Minnesota Landscape Arboretum |
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