I grow these every year. The varieties I love are asarina "Victoria Falls' and 'Red Dragon', the foliage on these are a blueish green that is interesting in containers. I'm not a big winter sow person because of my failure a few years back. Not sure what happened but was not a high yield process for me.
I may try again but seeds are so darn expensive I stick to heat mats and indoor growing.
I start these in mid February keeping my seed soil at 70-75 degrees, with a plastic dome to retain moisture.
Center front of container plant a few weeks after coming out of the greenhouse. 6/29
This is 8/29 Love this plant and I would not be without in my containers.
This is another fun vine for containers Rhodochiton 6/2
The tube part of the bloom falls away and the other part (looks like umbrella) stays of weeks.
Hummers like them both