(b) “Committee” means the Invasive Plants Advisory Committee.

(c) “Invasive plant” means a terrestrial plant species that:

(1) Did not evolve in the State; and

(2) If introduced within the State, will cause or is likely to cause, as determined by the Secretary:

(i) Economic harm;

(ii) Ecological harm;

(iii) Environmental harm; or

(iv) Harm to human health.

(d) “Landscaping services” includes services for ornamental horticultural design, maintenance, and installation of living plants.

(e) “Tier 1 invasive plant” includes invasive plant species that cause or are likely to cause severe harm within the State.

(f) “Tier 2 invasive plant” includes invasive plant species that cause or are likely to cause substantial negative impact within the State.