Greenhouse Ventilation

Ventilation, shading, and summer cooling for UK greenhouses. Autovents, louvre vents, extractor fans, shade netting and how to stop a greenhouse overheating.

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Greenhouse Too Hot? A UK Installer's Cooling Guide

Greenhouse Too Hot? A UK Installer's Cooling Guide

Matt W · 4th Aug 2026

A greenhouse hits 45-50C in summer sun, hot enough to scorch plants. The three cooling levers that hold it at 20-27C: full ventilation, shade netting and damping down. From installers with Greenhouse Stores experience since 2012.

Greenhouse Tomato Flower Drop: Why Heat Stops Fruit Set

Greenhouse Tomato Flower Drop: Why Heat Stops Fruit Set

Matt W · 15th Jul 2026

Flowers everywhere and not a tomato in sight. Heat kills the pollen about nine days before the flower even opens, so the truss failing today was lost last week. What the temperatures actually are, why nights matter more than afternoons, and why misting is a waste of time.

How to Get Rid of Fungus Gnats in a Greenhouse

How to Get Rid of Fungus Gnats in a Greenhouse

Matt W · 10th Jul 2026

Those little black flies over your seed trays are fungus gnats (sciarid fly). Here is how to kill the larvae, dry the compost and clear a greenhouse infestation for good, from Greenhouse Stores team.

Auto Vent Opener Installation UK: How to Fit and Adjust

Auto Vent Opener Installation UK: How to Fit and Adjust

Matt W · 13th May 2026

Step-by-step guide to fitting an automatic greenhouse vent opener: 5-minute install, brand comparison (Bayliss MK7 vs XL vs Vitavia), temperature adjustment, and the three fitting mistakes that wreck openers in the first season. From installers with Greenhouse Stores experience since 2012.

What to Grow in Greenhouse August UK

What to Grow in Greenhouse August UK

Matt W · 9th Jul 2025

August in your UK greenhouse is about maximising opportunities. You're harvesting the rewards of summer growing while investing in winter abundance. The key is understanding that successful August growing requires active management—this isn't a month to set things up and hope for the best.

Focus on heat management first. Get your ventilation and shading sorted before you start sowing because failed sowings cost time you can't recover this late in the season. Once conditions are right, be bold with your sowings—your greenhouse gives you growing opportunities that outdoor gardeners simply don't have.

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