i have 4 purple maroc , and a pack of 5 outdoor uk grow seeds currently growing in small pots outside in and old rectangle fishtank with chicken wire covering the top . 4 of the plants are currently about the height of a ketchup bottle with 4 leaves comeing of the stem and a cluster of leaves at the top. the others have only just emerged from the ground with 4 leaves at the top. i am aware that the plants are going to need re potting soon but arn't sure what way to go about doing this. the earth is reasonably clay'ey and the spot is in a bracon feild with lots of other plants and brambles growing all over the place. what are my options? im aware im either going to have to buy some big pots or to dig a whole , how big a hole , how big pots? advantages and disadvantages of both? what to feel the pots/hole with bearing in mind im on the cheap. cheers!!!