By Thefence
Cumbria,
United Kingdom 
hi folks
have this problem with cucumber plants in greenhouse
does not seem to have affected fruit..have had lots
have auto water system at baseof plant...has not affected tomatoes..what causes mold and how do i treat?
am away from homea lot so it is..grow alone !!
any help greatly appreciated
11 Aug, 2012
Answers
If you only leave your roof vent ajar, that is nowhere near enough ventilation, I would suggest you get an automatic vent opener, {various prices starting about £22} which will open and close as neccessary, and if this is the only vent you have, then leave the door open slightly as well, unless stray animals are likely to get in, but you definitely need more ventilation, Derek.
11 Aug, 2012
many thanks
will open roof window further and am switching water
system off for two days whilst away
water is dribble at roots twice a day for two minutes
so will starve them a bit!!
12 Aug, 2012
Previous question
thanks for help..i will turn off water to these plants for a few days
i leave the roof window ajar all the time!
thanks again
11 Aug, 2012