Mike Lyle wrote:

Alla, note what Sacha said earlier: if you fill the whole lawn with
spring bulbs, you're committed to not cutting the grass till the
summer, and it can look awful. It's usually best to have your
naturalised bulbs in their own areas, both for tidiness after flowering
and to preserve a more natural look.

I understood that crocuses will flower in February-March and I have to
wait 6 weeks before mowing. That means first mowing in May. Am I mistaken?

A good tip for lawns: if for any reason (not just naturalised plants:
time pressure, even a severe attack of laziness) you can't mow the
whole thing properly, at least do the edges, especially those nearest
to where people walk. That makes it look deliberate, not like a
failure. If you decide to manage it this way, of course it will mean no
crocuses at the edges.

Sounds like a good idea. I can leave a strip of lawn without crocuses
and mow it to make the whole thing look a bit tidier.

I have roses growing next to this bit of lawn. It is ground cover bright
pink The Fairy roses. The roses start flowering in mid June, so I was
thinking about planting some early flowering clematis in between them to
add some interest after crocuses are finished and roses haven't
started. Also to distract attention from unmown lawn. The flowering
time should be April-May. Is it a sensible idea? What sort of clematis
should I use?

Alla