I know the very thought of unscientific results being reported in this
newsgroup drives some bonkers - tough tookies.

My very unscientific experiment with red mulch (compared to many,
many, many years of growing tomatoes around here) has been a rousing
success. I have virtually no blight. I have tons of tomatoes. Why
the hell did I plant 15 plants? Hehehe. Seriously, the red mulch
seems to work. I have no idea if black would do as well, it wasn't on
sale )
--
Ann, gardening in Zone 6a
South of Boston, Massachusetts
e-mail address is not checked
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