The important thing is that plants escape from gardens there is always a risk that a plant will invade a natural ecosystem and threaten the native system.
(a plant; will invade; a natural ecosystem) (a plant; threaten; the native system) (The important thing; is; that plants escape from gardens there is always a risk that a plant will invade a natural ecosystem and threaten the native system) Context(The important thing is,List([0, 22))):(plants; escape; from gardens)
The important thing is,List([0, 22))
a plant a plant The important thing plants
will invade threaten is escape
a natural ecosystem
the native system
that plants escape from gardens there is always a risk that a plant will invade a natural ecosystem and threaten the native system
from gardens