My castor bean seedlings started sprouting a few days ago and have taken off like rockets. They look a little lanky but the lights are strong so I figure it's just they way they start their lives. I actually collected these seeds from the reddish plants in the centre of the beds at the Civic Garden Complex. These are bar far the nicest variety I have ever seen growing.
There are both red and green varieties but I definitely prefer the red. There are no other plants grown here that can add such a tropical and lush feel so quickly. The ones in the link above were over 3m (10ft) tall by the end of the summer and had been started indoor and planted at about 50cm (1.5ft). The growth rate is extremely impressive and we even had a relatively wet/cloudy summer. In tropical climates they actually grow into mid-sized trees. They can of course be trimmed to encourage denser, shorter growth. The photo below was taken yesterday. I love the spiraling stems.
Below you can see the seedlings as of a few minutes before this post. I'll probably have to split them up relatively soon. I like to start way too many seeds and then just save the best ones. It's emotionally difficult but works well!