Oriental Lilies

jordancolls

Hello!
I’ve been trying to find the answer online but to no avail so I thought you knowledgeable folk may help!
I have some Oriental lilies that I grew from bulbs in large pots and planters  a few years ago. 

Each year I get fewer thick sturdy flower stems and more little floppy small shoots that don’t produce flowers. 

They are top dressed and have a general feed. 

Should I be removing the weak leaf stems? Does it need repotting or a different fertiliser? Is it just what happens?
Any advice gratefully received!
Thanks!

punkdoc

The smaller floppy shoots are probably new bulblets.
After a few years the performance of Lilies in pots will decline, and they should be re-potted.

Fairygirl

You can divide them when they get like that too, as they get congested in pots over time. Replant the bigger bulbs in fresh compost, and let the smaller ones grow on separately in other pots to form new, flowering sized bulbs. 

jordancolls

Thanks for the advice. When is a good time of year to repot them?