Today’s Solutions: April 13, 2026

Back in July, we wrote about the world’s biggest rooftop urban farm in Paris, which recently started to bear fruit for the first time. Today, we’ll be skipping across the ocean to another French-speaking city—Montreal—where the biggest rooftop greenhouse just opened.

The Greenhouse was built by Lufa Farms and spans 160,000 square feet (15,000 square meters), or about the size of three football fields. It is intended to meet the growing demand for locally sourced foods. Using the new hanging garden trend, the greenhouse will focus on growing eggplants and tomatoes. It is the fourth greenhouse Lufa Farms have erected in the city.

Lebanese-born Mohamed Hage and his wife Lauren Rathmell, an American from neighboring Vermont, founded Lufa Farms in 2009 with the ambition of “reinventing the food system.”

At Lufa, about 100 varieties of vegetables and herbs are grown year-round in hydroponic containers lined with coconut coir and fed liquid nutrients, including lettuce, cucumbers, zucchini, bok choy, celery, and sprouts. Bumblebees pollinate the plants, while wasps and ladybugs keep aphids in check without the need for pesticides.

Now that’s some tasty, sustainable, locally-sourced produce.

Solutions News Source Print this article
More of Today's Solutions

Smartphone test detects water contamination in under a minute

BY THE OPTIMIST DAILY EDITORIAL TEAM After a flood, a pipe break, or a contamination event, one of the most pressing questions is also ...

Read More

The low-effort way to build real connection: finding your third place

BY THE OPTIMIST DAILY EDITORIAL TEAM Most people have two main places: home and work. The idea that you need a third sounds obvious ...

Read More

A four day workweek? 10 reasons it’s a great idea

While enduring the global pandemic, many of us have had the chance to reassess our values and goals for our lives. This has set ...

Read More

3 free longevity hacks for a longer life

There are a lot of habits that we can incorporate into our day-to-day lives that will help us extend our time on this earth. ...

Read More