Posted: 18/10/2013 at 17:16
I usually split hostas in spring just as the very first new shoots show their points because, if done in areas with cold winters, they can sulk and even die.
I have several in pots too and they'll all need dividing next spring and many will go in the ground to reduce my watering jbo in high summer. Getting a Sum and Substance out its pot will be fun as it's a huge pot that narrows at the neck. Oops. Howevr it needs doing as the two out in eth eborders are now producing much larger leaves than it despite being the same age.
With the very large leaved hostas, dividing them can lead to smaller leaves for the new season but then they go back to normal. Most hostas respond well to being divided and show renewed vigour.