Some start-ups are giving them a second life – as indoor farms growing crops as varied as kale, cucumber and herbs. Since its 1967 construction, Canada's "Calgary Tower", a 190m (623ft ...

Growing perennial vegetables in pots is an increasingly popular pursuit for gardeners with limited space. Unlike annual crops ...

Knowing how to grow kale will ensure lush ... Or, if you have space in your greenhouse, use small pots up to 10cm in diameter, sowing just a couple of seeds into each pot. 'Fill your modules ...