The place I bought my chilli plants from gives away this leaflet:
LOOKING AFTER YOUR PLANT
Potting on.
Once your chilli plant is about 6 inches tall and the
roots are visible at the bottom of the pot it is time for potting on.
any thing between a 2 & 4 It. pot depending on the type Of chilli,
some Of the very large ones, Lemon Drop, Padron or Fatalie will
need a 6 lt. pot. Many of the taller varieties Will need a small
cane for support. ChiIIies do not mind being a little pot bound, in
fact many benefit.
Start feeding your chilli plant with a high
nitrogen feed at half strength, Miracle Grow or Chempak twice
a week. Later on once the plant has started to produce flowers
and fruit switch to a high potash feed such as a tomato feed
and feed weekly.
Do not let the plant dry out completely but
also be careful not to over water. You may wish to pinch Out the
growing shoot to make a more bushy plant. If you put your plant
outside during the summer in a sheltered spot it Will strengthen
the plant making a Stronger plant to over winter. If the weather
is very hot a spray/misting is beneficial.
Pick fruit when ripe to
encourage more fruit to develop. The plant should be brought
into a warm position during the winter about the end of August
or September. Min. temp. 8-10 deg,C Remove any yellowing
leaves and a light pruning may be required on the larger
Varieties. Continue feeding whist still fruiting.
Pick all by
Christmas to give the plant a rest. Keep an eye open for green
fly/aphids. May be treated With an organic spray/garlic spray or
soap spray. Alternatively do some companion planting and
grow French Marigolds or basil nearby. In spring prune lightly
and start feeding again with a nitrogen feed.
Most chilli plants are three year perennials.