I'm thinking of planting seeds in troughs this year instead of buying plants. My aim is to attract pollinators, especially hummingbird hawkmoths. I've got a pack of nasturtiums which I know are pretty foolproof, but what other seeds would be good? I don't want to faff about with starting indoors etc. I've looked at wildflower mixes online but I don't know if they're more for sowing in lawns and might look odd in troughs with them all being different heights.
Recommendations please! x