Summer has arrived with its warm embrace, transforming gardens seemingly overnight from soggy spring plots to sun-drenched growing spaces. With this dramatic shift comes the perfect opportunity to maximize your greenhouse or polytunnel, turning it into a powerhouse of production.

Your greenhouse crops demand a counterintuitive approach to thrive. Rather than daily watering, which creates dependency and weak root systems, a calculated "miserly" approach with water forces plants to develop resilience. For tomatoes—arguably the most rewarding greenhouse crop—success lies in deep watering with seaweed-based feed every two weeks, complemented by weekly foliar sprays that create naturally disease-resistant foliage. The visible difference in leaf color and toughness becomes apparent within days of this treatment.

Proper planting technique matters tremendously. Adding mycorrhizal fungi and dried seaweed to planting holes anchors plants quickly, while strategic placement allowing maximum airflow prevents the humidity-related diseases that plague many greenhouse growers. Creating a "corridor" of flowers from outside to inside your greenhouse draws beneficial insects for natural pest control and pollination—particularly important for cucumbers and courgettes.

Each crop requires subtle adjustments to this approach: cucumbers appreciate occasional misting, courgettes need attention to pollination, and peppers prefer the warmest, driest corner. By understanding these nuances, you'll produce vegetables with incomparable flavor. The difference between homegrown and store-bought tomatoes becomes so stark that many gardeners refuse to eat supermarket varieties during the off-season.

Try these methods this season and experience the satisfaction of greenhouse growing that truly maximizes your space and rewards your efforts with months of exceptional harvests. Share your successes by tagging photos of your thriving crops—I'd love to see how these techniques transform your growing results!

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Until next week
Happy gardening
John