osmundinen.
/ɒzˈmʌndiːn/, /ˈɒzməndiːn/, U.S. /ˌɑzˈmənˌdin/, /ˈɑzmənˌdin/ North American.
Osmunda fibre (see osmunda n. 2).
ΘΚΠ
the world > food and drink > farming > gardening > equipment and buildings > [noun] > artificial soil or compost
potting soil1861
potting compost1891
osmunda1910
osmundine1932
John Innes1939
vermiculite1950
perlite1956
Inceptisol1960
1932 Bull. Amer. Orchid Soc. Sept. 52/2 The best compost to use for growing Cattleyas should consist of good fibrous brown fern root, osmundine as it is called.
1934 R. Stout Fer-de-lance vii. 101 Supplies—pots, sand, sphagnum..osmundine.
1987 St. Petersburg (Florida) Times (Nexis) 15 Mar. j15 Bromeliad..Fasten to limbs of rough-barked trees with aluminum wire or pot in a mixture of osmundine or peat, leaf-mold and sand.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
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n.1932