Identify hardy geraniums
Earlier this year I grew some hardy geraniums from seed. The seed was sold as a mix (almost a lucky dip) so I have no idea what types I have grown. None have flowered this year and I don't expect them to so I wondered if anyone could identify any of the plants by their foliage alone? I'm fairly sure one of them is a sanguineum but I have no idea about the others. The plant shown in the third photo below has glossy leaves and what seems like hollow stems, which I think is unusual for a hardy geranium but I am a beginner so could just be showing my ignorance!