PatternBaseOnion
Allium cepa, Amaryllidaceae
Guild Roles
Growing Conditions
Soil pH
6 – 7.5
Tolerances
Companion Plants
Antagonistic Plants
Umbrella thorn creates dense shade and produces tannins that can inhibit onion bulb development
Vietnamese CorianderPolygonum odoratumVietnamese coriander's aggressive spreading habit can outcompete and crowd out onion plants
FigFicus caricaFig trees have extensive shallow root systems that compete heavily with onion bulb development
Brown Turkey FigFicus caricaFig trees have extensive shallow root systems that compete heavily with onion bulb development
Black Mission FigFicus caricaFig trees have extensive shallow root systems that compete heavily with onion bulb development
Kadota FigFicus caricaFig trees have extensive shallow root systems that compete heavily with onion bulb development
HibiscusHibiscus sabdariffaBoth plants compete for similar soil nutrients in the root zone affecting bulb development
Common BeanPhaseolus vulgarisOnion compounds can inhibit bean growth and nitrogen fixation activity
FirethornPyracantha coccineaFirethorn's extensive root system and allelopathic leaf compounds compete with and inhibit onion development
Uses
Functions
Edible Parts
Common Questions
What zones does Onion grow in?
Onion grows in USDA hardiness zones 3 through 10.
What are good companion plants for Onion?
Good companions for Onion include Lettuce, Bell Pepper, Turnip, European Elderberry, Red Raspberry.
Design guilds with Onion and see companion relationships visually.
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