PatternBaseSilky Oak
Grevillea robusta, Proteaceae
Zones
9–11
Lifespan
Perennial
Growth
Fast
Growing Conditions
Soil pH
5.5 – 7
Tolerances
Drought
Frost
Heat
Pest Resistance
Disease Resist.
Companion Plants
Antagonistic Plants
Greenleaf DesmodiumDesmodium intortum
Silky oak produces allelopathic compounds that inhibit leguminous ground covers
Prince's Feather AmaranthAmaranthus hypochondriacusSilky oak allelopathy and root competition affect broadleaf crop establishment
Austrian Winter PeaPisum sativum subsp. arvenseGrevillea produces allelopathic compounds and has competitive root system that affects legume growth
Common Questions
What zones does Silky Oak grow in?
Silky Oak grows in USDA hardiness zones 9 through 11.
What are good companion plants for Silky Oak?
Good companions for Silky Oak include Coast Banksia.
Design guilds with Silky Oak and see companion relationships visually.
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