Working Page 8

Table A-1.1.3.3.-2 Establishment Period for Plants Forming Part of Note A-1.1.3.3.

Planting Method	Description	System Type Applicability	Survival Rate	Onsite Establishment Period
Seeding	Pre-selected seeds mixed into the growing medium or applied after growing medium is installed	Extensive	Good	2–4 years
Hydro-seeding	A mixture of mulch, seed, fertilizer, and water sprayed across the top of the growing medium	Extensive	Good	2–4 years
Terra-seeding	Seeds and growing media simultaneously sprayed onto the roof	Extensive Semi-Intensive	Good	± 2 years
Cuttings	Small pieces of leaves, stems, and roots of succulents, broadcast across, or pre- mixed into, the growing medium	Extensive Semi-Intensive	Good	1–3 years
Bare Root Plants	Plants shipped to the site with soil-free roots	Semi-Intensive Intensive	High	1–3 years
Plugs	Plugs grown at a nursery in a standard propagation mix and shipped to the site in trays	Extensive Semi-Intensive	High	1–2 years
Container-grown Plants	Plants grown at a nursery in containers/ pots, and therefore have well- developed roots	Extensive Semi-Intensive Intensive	High	2–3 years
Sedum sheets	Un-rooted Sedum cuttings pressed between paper-like sheets of a starch-based cloth lined with cotton gauze	Extensive	Good	N/A
Vegetative mats	Plants, typically Sedums and Sedum mixes, grown into growing medium engrained onto geotextile mats (typical size: 1m x 1m or 1m x 2m); rolled, stored on pallets, and shipped to jobsite for immediate installation	Extensive	High	1 year
Pre-planted modular systems	Plants pre-planted into metal or plastic modules using hardened off vegetation; packaged and shipped to a jobsite for immediate installation	Extensive Semi-Intensive Intensive	High	2–3 year
Pre-grown modular systems	Plants pre-grown in a specified growing medium in metal or plastic containers, possibly also containing drainage layer, borders	Extensive Semi-Intensive Intensive	High	1 year
Balled-and- burlap	Plants, usually trees or shrubs, that are grown in the ground; when ready for delivery, the plant is dug up and its root ball wrapped in burlap for shipment to the site	Intensive	High	2–3 years