Although
once a tricky grower because of the male/female pollination
process, the arrival of F1 hybrid varieties have made it
much easier. These varieties produce only female
flowers, fruits that are fertilised by male flowers are
bitter tasting.
Follow
the germination guidelines on the back of the seed
packet or use the technique below.
Sow seeds singly in 3" pots filled
with a good quality potting compost. Place the seed on
its edge, sideways, half an inch deep. The compost must
be thoroughly damp as the seeds have a very hard casing,
not enough water will lead to no germination.
Cover
the pots with plastic (cling film or bin liner) and
place in a warm room at least 15° C, or ideally 18- 25°C,
a heated propagator is ideal.
After
germination remove the covering and place in a light
position on the windowsill or in the greenhouse. These
plants are quick growing and will need staking with a
cane. Keep the temperature as constant as you can,
trying not to drop below 15° C, especially at night.
Pot
them on after 3 weeks or when the roots appear around
the rootball. Use bigger pots (5'' to 6").
When
the pots are full of roots and four leaves have fully
expanded, nip out the growing tip.
These
are now ready to be transplanted to their final
position. Use a 12" pot if growing in a container.
Erect something for them to climb up eg, bamboo canes at an
angle or wires attached to the
greenhouse roof.
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