…Is like printing your own money!
You really do not need to go to a home improvement retail chain to get hold of posh and trendy pottery which probably, is only going to cost you a fortune. What you do need to get hold of is good soil (nutritious and not polluted), GMO free seeds and fresh, clean water.
The rest is up to your imagination: milk/juice cartons, shoe boxes, bags, plastic bottles, used toilet rolls, Wellingtons (!) and so forth…
Source: Birds&Blooms: Cardbox Gardening
Source: Global Buckets: Grow Bags
What are you people in the Northern Hemisphere waiting for?
It’s Springtime! Go on! Go on and plant! Off you go!