An open question, as per the heading. Which white-flowered annuals or perennials do people think are the best for bees and other pollinating insects??
To qualify they need to flower steadily over a good long period and be genuinely attractive to bees or other pollinators. To get things going I'll suggest a few of my current favourites:
Cosmos bipinnatus 'Purity'
Scabiosa caucasica 'alba'
Which are other peoples favourites??
Look forward to seeing your suggestions.