Abies - National Seed Laboratory - USDA Forest Service

Table 10—Abies, fir: nursery practicesBareroot production Container productionStratification Seedling density Sowing depth Stock Container StockSpecies time (days) Sowing season /m 2 /ft 2 cm in Mulch a type type b typeA. alba 0 Fall 270–430 25–40 2 c 3 / c 4 Pine needles — — —30 d –80 Mid-Mar–mid-Apr — — — — — — Styro 2, 5 1+0A. amabilis 28 f Mar–Apr 270–540 25–50 0.5–1 1 /4 – 1 / 2 Straw g 3+0, 3+1 — —— — — — — — None 1+0, 2+0, 3+0 — —— Late Apr–early May 330/row 100/row — — — 3+0, 3+1 — —30 d –120 h Early Jan (1+0) for fall/winter lift — — — — — — 313B, 410A 1+030 d –120 h Jan–Mar (1+0) — — — — — — 313A&B, 410A, PCT410, 1+0, P+1 3412A, 415B&D, 615A30 d –120 h Early Mar–early April — — — — — — 313A, Styro 2, 5,& 7 1+0, 2+0, P+130 d –120 h Apr–early May (2+0) outdoors — — — — — — 415B,D, 412A 2+0A. balsamea 0 Fall 220–54 20–50 — — — — — —28–60 h Late Mar–early Apr — — — — — — Styro 2, 5, 7 1+0, 2+0, P+1A. bracteata 0 Fall — — 0.5 1 /4 — 2+0 — —14–28 Feb-Mar — — — — — — 313A, 415B, D, 615A 1+0, 2+0, 2+1, P+1A. concolor 0 Fall 270–430 25–40 2 c 3 / c 4 Pine needles, 2+0, 2+2, 3+0, P+1 — —peat moss, none28–60 f Spring 220–540 20–50 — — Straw g , none 1+0, 2+0, 2+1 — —14 d –80 h Early Jan (1+0) for fall/winter lift — — — — — — 313B, 410A 1+014 d –80 h Feb–mid-Apr — — — — — — 313A, 410A, 415B,D, 412A, 1+0, 2+0, 2+1,615A, Styro 2,5,7; Leach 1,2 P+1— Apr–early May (2+0) outdoors — — — — — — 415B, 412A 2+0A. firma i 3 0–60 Apr–early May — — — — — 2+2 — —A. fraseri 0 Fall 220–540 20–50 0.3–0.5 1 / 8 – 1 / 4 Sawdust 3+0, 4+0 — —28–60 Late Mar–early Apr 270 25 — — — — — —28 d –60 h Early Jan (1+0) for fall/winter lift — — — — — — 313B, 410A 1+040—60 Mid-March–early May 330 100 — — — — — —28 d –60 h Jan (1+0) — — — — — — 415B, D, 615D 1+028 d –60 h Feb–early Apr — — — — — — 313A, 415B,D, 615D, Styro 2, 5, 7 1+0, 2+0, P+128 d –60 h Apr–early May (2+0) outdoors — — — — — — 415B, 412A 2+0A. grandis 0 Fall 270–430 25–40 2 c 3 / c 4 None, sawdust 2+0, 2+1, 3+0 — —0 j –42 f,g Spring (early Apr–early May) 215–270 20–25 0.5–2 1 /4 – 3 / 4 pine needles 1+0, 2+0, 3+0, P+1 — —28 d –120 h Early Jan (1+0) for fall/winter lift — — — — — — 313B, 410A 1+028 d –120 h Jan–early Feb (1+0) — — — — — — 313A, 410A, 415B,D, 615A 1+028 d –120 h Early Feb–Apr — — — — — — 313A, 410A, 415B,D, 1+0, 2+0, 2+1,412A, 615A, Leach 1,2, Styro 2,5,7 P+128 d –120 h Early Mar (greenhouse)–early May — — — — — — 412A 2+0, P+1(2+0) (incl outdoors)A. homolepis 30–60 Spring — — — — — 2+2 — —60–80 Mid-Mar–mid-Apr — — — — — — Styro 2,5 1+0A. koreana 60–80 Mid-Mar–mid-Apr — — — — — — Styro 2,5 1+0A. lasiocarpa 0 Fall — — 0.3 1 /8 Leaf mold — — —var. arizonica 30 d –80 h Mid-Mar–mid-Apr — — — — — — Styro 2,5 1+0, 2+0AAbies . • 179