I grew all of them from seed that I bought from South Africa and some from the USA.
All of these are very easy to grow and flower.
Pelargonium citronellum
(One of my favorites. The lemon scent is so strong that stays in your fingers long after you touched the leaves)
Pelargonium cotyledonis
It looks like a small tree and the flowers are beautiful
Pelargonium incrassatum (I lost this one to rot... my fault. It's easy to grow)
Summer dormant. Very beautiful species.
