Silkoak
Scientific Name: Grevillea robusta A. Cunn. ex R. Br.
Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Rosidae / Proteales / Proteaceae / Grevillea R. Br. ex Knigh/ Grevillea robusta A. Cunn. ex R. Br.
| General Information | |
|---|---|
| Usda Symbol | GRRO |
| Group | Dicot |
| Life Cycle | Perennial |
| Growth Habits | Tree |
| Native Locations | GRRO |
Plant Guide
Use soil moisture sensors to measure the soil moisture of Silkoak.
Plant Traits
Growth Requirements
| Temperature, Minimum (°F) | 17 |
|---|---|
| Adapted to Coarse Textured Soils | Yes |
| Adapted to Fine Textured Soils | Yes |
| Adapted to Medium Textured Soils | Yes |
| Anaerobic Tolerance | None |
| CaCO3 Tolerance | None |
| Cold Stratification Required | Yes |
| Drought Tolerance | Medium |
| Fertility Requirement | Medium |
| Fire Tolerance | Low |
| Frost Free Days, Minimum | 365 |
| Hedge Tolerance | Low |
| Moisture Use | Medium |
| pH, Maximum | 7.0 |
| pH, Minimum | 5.3 |
| Planting Density per Acre, Maxim | 800 |
| Planting Density per Acre, Minim | 300 |
| Precipitation, Maximum | 95 |
| Precipitation, Minimum | 30 |
| Root Depth, Minimum (inches) | 36 |
| Salinity Tolerance | None |
| Shade Tolerance | Intolerant |
Morphology/Physiology
| Bloat | None |
|---|---|
| Toxicity | Slight |
| Resprout Ability | Yes |
| Shape and Orientation | Erect |
| Active Growth Period | Spring, Summer, Fall |
| C:N Ratio | High |
| Coppice Potential | Yes |
| Fall Conspicuous | No |
| Fire Resistant | No |
| Flower Color | Yellow |
| Flower Conspicuous | Yes |
| Foliage Color | Green |
| Foliage Porosity Summer | Dense |
| Foliage Porosity Winter | Dense |
| Foliage Texture | Fine |
| Fruit/Seed Conspicuous | Yes |
| Nitrogen Fixation | None |
| Low Growing Grass | No |
| Lifespan | Moderate |
| Leaf Retention | Yes |
| Known Allelopath | No |
| Height, Mature (feet) | 105.0 |
| Height at 20 Years, Maximum (fee | 100 |
| Growth Rate | Rapid |
| Growth Form | Single Stem |
| Fruit/Seed Color | Brown |
Reproduction
| Vegetative Spread Rate | None |
|---|---|
| Small Grain | No |
| Seedling Vigor | High |
| Fruit/Seed Period Begin | Fall |
| Seed Spread Rate | Rapid |
| Seed per Pound | 30000 |
| 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 | Yes |
| Fruit/Seed Period End | Winter |
| Fruit/Seed Abundance | Low |
| Commercial Availability | Routinely Available |
| Bloom Period | Summer |
| Propagated by Cuttings | No |
Suitability/Use
| Veneer Product | Yes |
|---|---|
| Pulpwood Product | No |
| Post Product | No |
| Palatable Human | No |
| Nursery Stock Product | Yes |
| Naval Store Product | No |
| Lumber Product | Yes |
| Fodder Product | No |
| Christmas Tree Product | No |
| Berry/Nut/Seed Product | No |
