I visited my mother in southern California for Mother's Day weekend. While there I heavily pruned two Hibiscus.
Does anybody in the US want some hardwood tip cuttings? If so private message me.
I've already stripped off buds and most leaves. Then I soaked them in slightly soapy water for 8 hours and rinsed. I don't see any pests but they've been growing outdoors. They propagate easily from hardwood cuttings with rooting hormone in sterile medium under humid, warm conditions. A friend who lived in Caracas when a child recalls her mother hammering Hibiscus cuttings into the soil along their walkway. All of them took.
One is Crown of Bohemia, a very double dark gold with a darker center. It is much darker than most images I saw in a search, which show it much lighter yellow and with fewer petals than it is in reality. The
rightmost image on the Dave's Garden Web page is accurate.
The other is a very round, glowing orange with a dark red throat. I couldn't find anything like it on an image search of "orange hibiscus." Its outline is very round, with not much petal separation.
I planted both in the mid 1970s when I was in high school, so they are heirloom varieties.