Welcome to May, and happy belated Beltane! What’s Beltane? Well, most folks who celebrate it nowadays call it May Day.

The best time to prune a butterfly bush is in late spring, right after the buds swell and the leaves begin to emerge. Winter dieback is common on these shrubs in areas with very cold winters.

To plant butterfly pea seeds, soak them overnight in water to hasten germination. Sow seeds about one inch deep into the ...