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ASTM D5539-14

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Standard Specification for Seed Starter Mix

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1.1 This specification covers the material characteristics, physical requirements, and sampling appropriate to the designation of a soil or soil-like material for seed starting purposes. This would consist of the duration of germination ending after the cotyledon stage (at the opening of the first true leaves).

1.2 Seed starter mix may include natural soils and artificial mixtures of natural or artificial materials used for the initial germination of seeds to the cotyledon stage.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Alternate sieve designations in parentheses are as provided in Specification E11.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


This specification covers the material characteristics, physical requirements, and sampling, of soil or soil-like material for seed starter mix. Starter mix may include natural soils and mixtures of natural or artificial materials for use in initial germination of seeds to the cotyledon stage. Seed starter mix shall be able to provide a germinating seed with basic needs such as aeration, water retention, surface crusting resistance, nutrients, soluble salts, optimum pH, sanitation, and bulk density that does not inhibit root elongation. Materials for seed starter mix may include vermiculite, sphagnum peat moss, perlite, coarse sand, expanded shale, clay, slate, peat humus, other peat products, composted organic materials, and other organic and inorganic materials.


SDO ASTM: ASTM International
Document Number D5539
Publication Date Nov. 1, 2014
Language en - English
Page Count 3
Revision Level 14
Supercedes
Committee D18.22
Publish Date Document Id Type View
Nov. 1, 2014 D5539-14 Revision
June 15, 2013 D5539-13 Revision
Jan. 15, 2013 D5539-94R13 Reaffirmation
July 1, 2008 D5539-94R08 Reaffirmation
Dec. 10, 1998 D5539-94R98 Reaffirmation
April 15, 1994 D5539-94R03 Reaffirmation