Posted: 30/07/2012 at 13:13
Becks, sorry, but I honestly wouldn't bother with rhubarb seed. Rhubarb is one of those plants that rarely grows true to type from seed - in other words, the offspring (grown from seed) doesn't reproduce all the parent's characteristics. What's more, it takes a couple of years to get to harvest stage.
If you fancy rhubarb, look around for rhubarb crowns at garden centres or nurseries. They're produced from the division of existing plants. Much much more reliable. Spring, though, is the best time to plant crowns.