My clematis plants have lots of greenery but no sign of buds. I gave them some Growmore in March. AM watering them enough - but would like to see buds!

You may not need to do anything, it depends on the variety of clematis you have. Some don't flower until July, so you wouldn't expect buds to present on those ones yet. Do you know which varieties you have?

You are in the southern hemisphere so you are in a reverse growing season from where Bam and I are looking. Another factor influencing the answer would be is that Peru is a very mountainous country so the altitude at which you reside has some influence. Perhaps there is a GOY member in your area that can help.