Accepted Symbol
GRRO
Symbol
GRRO
Scientific Name
Grevillea Robusta
Common Name
Silkoak
Category
Dicot
Genus
Grevillea
Family
Proteaceae
Family Symbol
PROTEA
Family Common Name
Protea Family
Ecology and Taxonomy Data
Orders
Liliales
Subclass
Liliidae
Class
Liliopsida
Division
Magnoliophyta
Superdivision
Spermatophyta
Subkingdom
Tracheobionta
Kingdom
Plantae
Itis Tsn
42750
Duration
Perennial
Growth Habit
Forb/herb
Native Status
L48 (N), AK (N), CAN (N)
Morphology/Physiology
Active Growth Period
Spring, Summer, Fall
Bloat
None
C N Ratio
High
Coppice Potential
Yes
Fall Conspicuous
No
Fire Resistance
No
Flower Color
Yellow
Flower Conspicuous
Yes
Foliage Color
Green
Foliage Porosity Summer
Dense
Foliage Porosity Winter
Dense
Foliage Texture
Fine
Fruit Color
Brown
Fruit Conspicuous
Yes
Growth Form
Single Stem
Growth Rate
Rapid
Height At Base Age
100
Maximum Feet
105
Height
No
Mature Feet
Yes
Known Allelopath
Moderate
Leaf Retention
No
Lifespan
None
Low Growing Grass
Yes
Nitrogen Fixation
Erect
Resprout Ability
Slight
Growth Data
Adapted To Coarse Textured Soils
Yes
Adapted To Medium Textured Soils
Yes
Adapted To Fine 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
365
Hedge Tolerance
Low
Moisture Use
Medium
Ph Minimum
5.3
Ph Maximum
7.0
Planting Density Per Acre
300
Maximum
800
Precipitation Minimum
30
Precipitation Maximum
95
Root Depth
36
Minimum Inches
None
Salinity Tolerance
Intolerant
Shade Tolerance
17
Reproduction Data
Bloom Period
Summer
Commercial Availability
Routinely Available
Fruit Seed Abundance
Low
Fruit Seed Period Begin
Fall
Fruit Seed Period End
Winter
Fruit Seed Persistence
Yes
Propogated By Bare Root
Yes
Propogated By Bulbs
No
Propogated By Container
Yes
Propogated By Corms
No
Propogated By Cuttings
No
Propogated By Seed
Yes
Propogated By Sod
No
Propogated By Sprigs
No
Propogated By Tubers
No
Seeds Per Pound
30000
Seed Spread Rate
Rapid
Seedling Vigor
High
Small Grain
No
Vegetative Spread Rate
None
Sustainibility Data
Berry Nut Seed Product
No
Christmas Tree Product
No
Fodder Product
No
Lumber Product
Yes
Naval Store Product
No
Nursery Stock Product
Yes
Palatable Human
No
Post Product
No
Pulpwood Product
No
Veneer Product
Yes
