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The circulation of fresh air in an enclosed environment.
A fungal plant disease that causes a powdery coating on the surfaces of affected plants. Commonly occurs where plants have been exposed to damp conditions. It can be prevented by having good ventilation.
A traditional structure for the storage of vegetables. A clamp consists of a pile of the vegetables, layered with straw and soil to protect it from frost and rain. Ventilation holes are plugged with loose straw to prevent the build-up of carbon
Regularly water crops in pots and growing bags, daily if needed in warm weather Plant trailing tomatoes in hanging basketsFeed young plants weekly with a solution of liquid fertiliserVentilate the greenhouse during the day, but close vents
to supportsIncrease shading and ventilation to keep temperatures down on hot daysTake cuttings from hydrangeas, fuchsias, pelargoniums, osteospermums, marguerites, coleus and verbena
The cucumber plants in my greenhouse were growing well but started to develop "powdery mildew" which I was told was due to the atmosphere being too moist.I tried to increase ventilation and water carefully.I now have mildew and red spider mite which
Thanks Ian Hi, I had the problem in my GH real bad this year I believe it was due to the lack of sunshine and warmth. Inadequate ventilation can be a probable cause. Hope 2013 is better! 2013 has to be better. PLEASE
, must be the cold. Thanks for the info will leave them alone. You should shade the greenhouse from direct sunshine and ventilate as much as possible-that will help with fluctuating temperatures. My greenhouse isn't glass so doesn't get the full force
cover to continue cropping over winterVentilate the greenhouse on warm daysLine the glass with bubble polythene for insulationPropagate perennials from root cuttings including phlox, rhus and mintPlant bulbs in large pots of compost ready to fill any
Plant hippeastrum bulbs for spring displaysInsulate your greenhouse with bubble polythene for insulationVentilate greenhouses on warm, dry daysUse rainwater to keep the compost of potted azaleas constantly moistCheck fuel levels in paraffin and gas