Great Laurel
Scientific Name: Rhododendron maximum L.
Synonyms: Rhododendron ashleyi Coker
Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Dilleniidae / Ericales / Ericaceae / Rhododendron L./ Rhododendron maximum L.
| General Information | |
|---|---|
| Usda Symbol | RHMA4 |
| Group | Dicot |
| Life Cycle | Perennial |
| Growth Habits | ShrubTree, |
| Native Locations | RHMA4 |
Plant Guide
Use soil moisture sensors to measure the soil moisture of Great Laurel.
Plant Traits
Growth Requirements
| Temperature, Minimum (°F) | -13 |
|---|---|
| Adapted to Coarse Textured Soils | Yes |
| Adapted to Fine Textured Soils | No |
| Adapted to Medium Textured Soils | Yes |
| Anaerobic Tolerance | Low |
| CaCO3 Tolerance | None |
| Cold Stratification Required | No |
| Drought Tolerance | High |
| Fertility Requirement | Low |
| Fire Tolerance | Medium |
| Frost Free Days, Minimum | 150 |
| Hedge Tolerance | Medium |
| Moisture Use | Medium |
| pH, Maximum | 5.5 |
| pH, Minimum | 4.0 |
| Planting Density per Acre, Maxim | 680 |
| Planting Density per Acre, Minim | 170 |
| Precipitation, Maximum | 60 |
| Precipitation, Minimum | 36 |
| Root Depth, Minimum (inches) | 18 |
| Salinity Tolerance | None |
| Shade Tolerance | Tolerant |
Morphology/Physiology
| Bloat | None |
|---|---|
| Toxicity | Moderate |
| Resprout Ability | Yes |
| Shape and Orientation | Semi-Erect |
| Active Growth Period | Spring and Summer |
| C:N Ratio | High |
| Coppice Potential | No |
| Fall Conspicuous | Yes |
| Fire Resistant | Yes |
| Flower Color | Red |
| Flower Conspicuous | Yes |
| Foliage Color | Dark Green |
| Foliage Porosity Summer | Dense |
| Foliage Porosity Winter | Dense |
| Foliage Texture | Coarse |
| Fruit/Seed Conspicuous | No |
| Nitrogen Fixation | None |
| Low Growing Grass | No |
| Lifespan | Long |
| Leaf Retention | Yes |
| Known Allelopath | Yes |
| Height, Mature (feet) | 25.0 |
| Height at 20 Years, Maximum (fee | 15 |
| Growth Rate | Slow |
| Growth Form | Multiple Stem |
| Fruit/Seed Color | Brown |
Reproduction
| Vegetative Spread Rate | None |
|---|---|
| Small Grain | No |
| Seedling Vigor | Low |
| Fruit/Seed Period Begin | Spring |
| Seed Spread Rate | Slow |
| Seed per Pound | 5000000 |
| Propagated by Tubers | No |
| Propagated by Sprigs | No |
| Propagated by Sod | No |
| Propagated by Seed | Yes |
| Propagated by Corm | No |
| Propagated by Container | Yes |
| Propagated by Bulb | No |
| Propagated by Bare Root | Yes |
| Fruit/Seed Persistence | No |
| Fruit/Seed Period End | Summer |
| Fruit/Seed Abundance | Low |
| Commercial Availability | Routinely Available |
| Bloom Period | Mid Spring |
| Propagated by Cuttings | Yes |
Suitability/Use
| Veneer Product | No |
|---|---|
| Pulpwood Product | No |
| Post Product | No |
| Palatable Human | No |
| Nursery Stock Product | Yes |
| Naval Store Product | No |
| Lumber Product | No |
| Fodder Product | No |
| Christmas Tree Product | No |
| Berry/Nut/Seed Product | No |
