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!








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It appears to be rather tender - but it's not. It is, however, a relatively short lived perennial (maybe 3 seasons in my garden) but no worries - it will self-seed quite readily in the right conditions.
G. palmatum is sometimes confused with Geranium maderense which is definitely more tender - and I think that could be number 1. Again it should seed quite easily. It won't enjoy a cold wet winter but the seedlings will come up next year.
Agree number 2 is a sanguineum.
Number 4 has just started flowering. What do people think it could be? I thought perhaps Geranium Versicolor or maybe a variant of Wlassovianum, but might just be a hybrid.