sibyl yes hardy hibiscus put on seeds
.They will form a seed
pod where the blooms drop off.
pod will turn brown when there ready to
pluck from the plant
get them just as they start to open so as not to lose any seeds
When you start your seeds plant
them 1/4 inch deep and keep them moist they should sprout for you in 7 to 12 days.most hardy hibiscus will grow 1 stalk the first year but may not bloom till the second year.Then the plant
will come back with more and more stalks each year from the root system.
They love full sun and lots of water during the hot summer days.
Hope this helps and good luck on growing
Your friend in gardening. Mike57