The first time I saw a proper vertical farm, I nearly broke my neck. I’m not being dramatic—I literally stumbled backward in the narrow alley behind an old warehouse in east London, trying to see the top of a five-story brick wall absolutely dripping with vegetables. My friend Sasha (yes, the same one from my uni days with the organic farm in Somerset) had dragged me there on one of our “urban food adventures,” which usually involved hunting down community gardens hidden in forgotten corners of the city. But this was something else entirely. Lettuces, herbs, strawberries, and what looked suspiciously like dwarf tomatoes were growing horizontally out of the vertical surface, catching the afternoon sun in a neighborhood better known for its graffiti than its gardening.
“They’ve got a smart irrigation system that captures rainwater from the roof,” Sasha explained, grinning at my slack-jawed expression. “The whole thing’s on sensors, uses about 90% less water than conventional growing.” An elderly man emerged from a side door, introduced himself as Mo, and proceeded to give us an impromptu tour that turned into a three-hour crash course on urban vertical farming. By the time we left, loaded down with a bag of the sweetest mixed greens I’d ever tasted, I was properly obsessed.
That was seven years ago. Since then, I’ve crawled through shipping container farms in Bristol, climbed rickety ladders to access guerrilla rooftop gardens in Birmingham, and once memorably got stuck in a hydroponic system in a converted underground car park in Manchester. (Pro tip: don’t wear dangly earrings around water pumps. The fire brigade found it much funnier than I did.) Urban farming has exploded from a fringe hobby to a serious answer to some of our most pressing food security questions, and I’ve had a front-row seat watching it happen.
There’s a certain irony in the fact that I grew up in suburbia with an actual garden—tiny by rural standards but positively sprawling compared to what most city dwellers have access to—and now I spend most of my time writing about how to grow food in spaces the size of a bath towel. But that’s rather the point, isn’t it? Most people live in urban environments now, many without access to growing space, and an alarming number live in what are called “food deserts”—areas where fresh, nutritious food is difficult to obtain, usually due to a combination of poverty and lack of grocery stores.
My friend Jun (the electronics whiz from my Bristol house share who could fix anything) now runs a non-profit in Birmingham installing small-scale hydroponic systems in community centers. Last month I helped him set up a new system in a church hall that serves an estate where the closest thing to a vegetable shop is the frozen section of a corner store. “Most of these kids have never seen a lettuce growing,” he told me as we fitted the LED grow lights. “Their parents don’t buy them because they’re too expensive and don’t keep long enough to be practical on a tight budget.” Two weeks later, he sent me photos of children harvesting their first crop of butter lettuce, looking at the roots with the kind of wide-eyed fascination usually reserved for Christmas presents.
That’s the thing about urban farming innovations—they’re not just clever tech solutions, they’re addressing genuine social needs. Food security isn’t theoretical when you’ve got a single parent working two jobs who can’t get to a proper grocery store because there isn’t one within walking distance and the bus would take an hour each way.
The technologies themselves range from the gorgeously simple to the mind-bogglingly complex. On the simpler end, you’ve got setups like window farms—those vertical arrangements of repurposed plastic bottles connected with plastic tubing that use air lift pumps to circulate nutrient solution. I built one in my first London flat, mostly out of stuff I found in skips, and grew enough herbs and salad to supplement my student-budget meals for months. The landlord was surprisingly chill about the whole thing, possibly because I bribed him with fresh basil whenever he came round.
Then there’s the middle range—systems like the zipgrow towers I saw at that first vertical farm in London. They’re essentially fabric-filled pipes with slits cut in them where plants grow outward horizontally while their roots grow inside the pipe. Nutrient-rich water trickles down through the system, using gravity instead of pumps, making them both energy-efficient and blissfully quiet. I’ve helped install these in everything from primary school classrooms to retirement homes, and they’re remarkably forgiving of neglect, which makes them perfect for community settings where maintenance might be, let’s say, enthusiastic but inconsistent.
At the high-tech end, you’ve got the properly sci-fi stuff: fully automated aeroponic systems where plant roots dangle in misted air, rotating vertical carousels that maximize exposure to grow lights while minimizing footprint, and my personal favorite, aquaponic systems that pair fish farming with vegetable production in a beautiful symbiotic relationship. The fish waste provides nutrients for the plants, and the plants filter the water for the fish. It’s the kind of elegant closed-loop system that makes my sustainability-obsessed heart skip a beat.
I spent three days last summer at an aquaponic farm built on the roof of an old biscuit factory in Liverpool. The founder, a former accountant named Priya who got tired of crunching numbers and decided to crunch lettuce instead, has created a commercial-scale operation that supplies restaurants across the city with greens and tilapia. “The chefs come up here themselves now,” she told me as we checked pH levels in the fish tanks. “They say they get inspired seeing where their food comes from, and sometimes they take the kitchen scraps back to feed our worm bins.” It’s exactly the kind of connected food web that urban areas have been missing.
But let’s be honest—not all urban farming innovations are created equal, and some of the most hyped ones make me deeply skeptical. I’ve toured a few of those ultra-high-tech vertical farms that look like something out of a science fiction film—all sterile white surfaces and robots moving trays of microgreens under purple lights. They’re impressive, certainly, but the energy consumption is eye-watering, and most of them are producing luxury items for high-end restaurants rather than addressing actual food insecurity. I once asked the CEO of one such operation if they had plans to grow staple crops or reduce their prices to reach underserved communities. The awkward silence and subsequent pivot to talking about their “premium microgreen blends” told me everything I needed to know.
The most effective urban farming solutions I’ve seen aren’t necessarily the shiniest or most Instagram-worthy. They’re the ones designed with the community’s actual needs in mind, built to be maintained by the people who will benefit from them, and integrated into existing food systems rather than trying to replace them wholesale.
Take the rooftop greenhouse project in Glasgow that I visited last year. It’s built on top of a social housing block, uses passive solar design to minimize energy use, and grows crops selected by the residents themselves. The residents manage it collectively, with technical support from a local urban agriculture non-profit. “We wanted pak choi and callaloo,” an elderly resident named Mrs. Walker told me while showing me around, “not those fancy salad leaves no one knows what to do with.” The greenhouse provides fresh produce to 50 families in the building, with excess sold at an affordable price to the surrounding community, and the proceeds reinvested in the project.
Or consider the network of “alley gardens” I helped document in Manchester, where residents of terraced houses have collectively transformed the narrow alleys behind their homes into productive growing spaces. They’re using a mix of traditional raised beds, vertical growing systems made from recycled materials, and small-scale hydroponics. What makes it work isn’t fancy technology but the social structure they’ve created—shared maintenance schedules, equitable distribution of produce, and regular skill-sharing workshops. “It’s brought the street together,” explained Raj, who spearheaded the project after retiring from teaching. “People who lived next door to each other for twenty years but never spoke are now swapping seedlings and recipes.”
The most exciting development I’ve seen recently is the integration of urban farming with broader city systems. Bristol, where I’m based, has started incorporating edible landscaping into new social housing developments, with fruit trees and berry bushes replacing purely ornamental plantings. There’s a primary school in Liverpool that’s built a working farm on its grounds, complete with a small vertical growing system inside each classroom. Manchester has converted a section of a municipal park into a food forest, with layers of edible plants from canopy to ground cover that anyone can harvest from.
What gives me the most hope is seeing these innovations being combined with policy changes that address the underlying causes of food deserts. Birmingham has started offering reduced business rates for shops that stock a minimum percentage of fresh produce in food desert areas. Glasgow is experimenting with planning regulations that require new developments to include food-growing spaces. London has launched a program that helps convenience stores install small-scale hydroponic units to grow salad greens on-site.
But here’s the thing about urban farming that I’ve learned from a decade of crawling through DIY growing operations and high-tech vertical farms alike: it’s not a silver bullet. It’s a crucial piece of a complex puzzle that includes transportation justice, living wages, culinary education, and challenging the stranglehold that supermarket chains have on our food distribution systems. Even the most brilliant hydroponic wall system won’t solve food insecurity if people can’t afford the electricity to run it or don’t have the cooking facilities to prepare what it grows.
That said, I’ve seen with my own eyes what these innovations can accomplish when implemented thoughtfully. Last month, I visited a youth center in one of Bristol’s most deprived areas where they’ve installed a modular vertical farming system. The teenagers there are growing food for their own community kitchen, learning marketable skills, and some have started small businesses selling specialty crops to local restaurants. “Before this, I thought food came from shops,” one fifteen-year-old told me while showing me how she was propagating Thai basil cuttings. “Now I know it comes from work and care.”
I grow about a third of my own vegetables now, mostly in a jury-rigged vertical system on my tiny balcony that I’ve modified so many times it’s basically the Ship of Theseus—there’s not a single component left from the original build. My neighbors have stopped looking surprised when they find me precariously balanced on the railing, adding yet another tier of growing space or fiddling with the irrigation timer. Sometimes I catch myself staring at my little vertical garden, watching the water drip efficiently from level to level, and thinking about that wall of vegetables I saw in London all those years ago. I’m still not growing anything as impressive as dwarf tomatoes—my cherry tomatoes this year were more like cherry currants, to be honest—but I’ve learned that urban farming isn’t about perfect production. It’s about connection, resilience, and the quiet revolution of growing food where food shouldn’t logically be able to grow.
“People need to see where their food comes from,” Mo had told me during that first vertical farm visit, gently placing a strawberry in my palm that had been growing on a wall minutes earlier. “Not in pictures or videos, but right in front of them, in their neighborhoods, where they can touch it and smell it and taste it.” Seven years and countless urban farming adventures later, I couldn’t agree more. These innovations aren’t just growing food—they’re growing knowledge, community, and the seeds of a more equitable food system, one vertical salad tower at a time.
