Posted: 18/03/2014 at 10:05
Good question Jack - it shows you're getting the hang of this gardening thing
After bulbs have flowered the leaves continue to grow a for a while then die down - all the nutrients in the leaves go back into the bulbs to build them up for the next year. You can help this by giving them a bit of fertiliser just after flowering so those leaves build up lots of nutrition before dying back down.
And yes, when they've died down you need to remember or mark where they are, so that when you're planting you don't dig them up or damage them - plant around them, not on top of them.
Primulas aren't bulbs, but after flowering the leaves will continue to grow and the same principle applies - also the plants will get bigger and it is at this time you can divide them to create more plants if that's what you want. They will then die down for the winter and reappear again in the spring.