Flax prefers well drained, medium to heavy soils. Flax was grown as a winter annual in the Mediterranean climate, and as a summer crop in the more northern regions of Europe. Like other species, rotation is critical for flax. Disease buildup can be very damaging. A 3-6 year rotation is best.
Weeds can be a big problem as well.
Cotton and kapok Fiber separated mechanically by ginning Catch fibers on combs and separate from seed 2. Old World crop - from Mediterranean region. For centuries this was Europe's chief fiber. Egyptian mummies 4,000 years old wrapped in linen. Today only one million tons fiber are grown, must compete with cotton, wool and synthetic fibers, polyesters.