Posted: 30/09/2017 at 18:24
I've used shop-bought garlic with great success. I usually buy from a market or independent greengrocer, and I look for (preferably) Isle of Wight or French garlic rather than, say, Chinese. Sometimes I just select my best bulbs and use them for the next year's crop, so I'm encouraging the process of natural selection. Works for me.
I always start my basil with a small supermarket pot, and straight away I plant it into a larger pot with some extra compost. It ends up really big and vigorous. The last one I bought was from Aldi for about 75p. It was small and floppy for a few days, and I thought it was a false economy, but it soon grew on into a monster of a plant, with huge leaves, and I am considering making some pesto to use it up.