I’ve still got 5 full containers of frozen chillies from last season, went a bit to mental I think.
Chillies will grow as big as their surroundings (except the dwarf/patio varieties) so the bigger the pot generally the bigger the plant but I find it’s best to let them grow into their pot before sizing up. Use NO.4 high nitrogen feed during the green growing phase and an allround feed during the fruiting phase, both at 1/2 recommended dose.
The most important thing is soil mix and watering, chilli plants hate standing in water so it’s best to wait untill they almost wilt before watering. And for a high draining soil mix I use 50% compost, 25% sharp/builders sand and 25% perlite/grit, mix in a few spoons of bonemeal for good measure. The enemy are aphids and those pesky little fungus gnats but bottom watering will help with the latter.
I started late this year but would highly recommend just seeds on ebay, everything bar one seed germinated in five days….