rhubarb

mine is growing well, but throws up flowers when we have a dry period at this time of year...i just cut the flowers off and give it a good water/feed...seems to do the job.

I'm just learning about rhubarb this year. 

So far, the little roots I bought (pencil to little finger diameter, maybe 5 inches long on average) have produced what I consider huge plants, given the root size; 18 inches across or so.  We haven't hit hot weather though, just up to 27 to 29 C on occasion, mostly lower than that by 10 or more degrees (we had a freeze, 0 degrees C, at night 3 days ago).   

I adjusted our sandy loam soil with additional sand to make a loamy sand, then mixed in lots of compost and about a tablespoon of granular 13-13-13 fertilizer to a 3 gallon nursery pot (temporary measure until I finish making a raised bed for rhubarb).  I top dress with another teaspoon of fertilizer occasionally, before a rain.  I water about every other day unless it has rained recently.  So far, no bolting yet.

I think some varieties are more prone to sending up flower spikes than others.
I have 3 clumps and the later variety always sends up a spike which I just pull off.