The clear allows the seeds to sprout and start growing only to be killed by the heat, this may happen several times during the solarization duration. The black doesn't work for that. George penny x stamm wrote: > > George, why do you use 'clear' polyetheline sheets instead of > black? > > Penny, NY > > . > . > > ________________________________________________________________ > GET INTERNET ACCESS FROM JUNO! > Juno offers FREE or PREMIUM Internet access for less! > Join Juno today! For your FREE software, visit: > http://dl.www.juno.com/get/tagj.