Reading the Air
Plants don’t read thermometers. They don’t respond to temperature alone, or humidity alone. They respond to the relationship between them — specifically, to the difference between the vapour pressure of water inside their leaves and the vapour pressure of the surrounding air. That difference has a name: Vapour Pressure Deficit, or VPD. It’s the metric that determines whether a plant is actively growing, conserving water, or quietly stressed. It drives transpiration, nutrient uptake, and stomatal behaviour. Commercial greenhouse operators have used VPD as their primary climate metric for decades. Most small-scale growers — market gardeners, hobby glasshouse operators, urban food producers — have never encountered it, because the equipment to measure and act on it has cost thousands of dollars and required specialist configuration.
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Sustainable Gardening: Projects with The Seasonal Garden
At SEIN, our ‘Grow’ philosophy is about nurturing a deeper connection to the land and our food, often augmented by thoughtful technology. We believe in empowering individuals to cultivate their own sustenance in ways that are both efficient and respectful of nature’s rhythms. It’s about bringing the wisdom of the garden into the modern home and community space. We are thrilled to partner with The Seasonal Garden , a local initiative that shares our passion for accessible, sustainable food production. Together, we’re exploring innovative solutions that integrate smart technology with beautiful design, helping you grow more with less.
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