In field studies conducted between 1988 and 1990, flax (Linum usitatissimum L.) was swathed or desiccated with diquat, glufosinate-ammonium or glyphosate at various times between the 0 and 100% brown capsule stages to determine the effects on drying of plant components, seed discoloration and germination. Leaf and capsule browning were complete about 1 wk after application of diquat and glufosinate-ammonium and about 2 wk after application of glyphosate. Stem browning was variable from one application to another, but was usually adequate for harvesting 1–2 wk after application of diquat and glufosinate-ammonium and 3 to 4 wks after application of glyphosate. Diquat gave the most rapid stem browning and glyphosate the slowest. In most cases, swathing and application of diquat or glufosinate-ammonium resulted in capsule moisture low enough for harvest 2 wks after treatment. Drying of capsules following glyphosate application was less rapid. Early applications of glufosinate-ammonium sometimes resulted in darker brown seed. Glyphosate applied before all capsules were mature reduced seed germination. Key words: Flax, Linum usitatissimum L., swathing, desiccation, seed color, germination