True, these recommendations are not suitable for terry petunia – it does not form seeds. Problems can also be with hybrid varieties, which combine several options in color. It is likely that next year their color will change a little and become simpler, and the flowers and the bushes themselves are crushed.
Seed collection time is summer and early autumn. To start the procedure, just wait until the flowers on the bush you like fade and dry. Carefully remove the petals, small green boxes will remain under them.
Wait a few days and carefully cut with scissors or pinch off the pods that are just starting to turn yellow. Don’t let them dry completely. Otherwise, you can simply miss the moment when the fruits crack and seeds fall out of them.
Arrange the cut boxes in paper envelopes, even tea bags are perfect. Leave to ripen in a dry place at room temperature.
Over time, the boxes will crack and seeds will spill out of them. If this does not happen, but the boxes turn dry and brown, carefully open them and pour the contents into an envelope, and discard the shells themselves.