A species introduced from outside a region, not naturally adapted to local conditions and often requiring more water, maintenance, and resources than native alternatives.
In plain terms
Non-native plants (also called introduced, exotic, or alien plants) come from other regions. Some are beautiful ornamentals but lack adaptation to local climate and soil. They often require supplemental water, fertilizer, and pest management. Some become invasive, taking over natural areas. Overuse of non-natives replaces native plants that support local wildlife.
Why this matters
Understanding non-native plants helps you balance beauty (non-natives can be gorgeous) with sustainability (natives support ecosystems). Most gardens benefit from mixed plantings, but prioritizing natives is environmentally sound.
In practice
Examples
Non-native ornamental shrub requiring constant watering in dry climate; native alternative thrives with minimal water.
Non-native invasive plant (like multiflora rose) spreading into natural areas; crowding out natives.
Non-native but non-invasive ornamental (like Japanese maple) beautiful but requires more maintenance than native alternatives.
Non-native tropical plants in temperate gardens; require protection or bring indoors for winter.
Practical applications
Research invasive plants in your region; avoid planting them.
Prioritize native plants; non-natives are acceptable as accents or for specific purposes.
Check invasive plant lists before buying; many regions list problematic non-natives.
If you have non-native plantings, don't feel obligated to tear them out; gradually transition toward natives.
Support native plant nurseries and societies in your region.