Hi, I’m looking for ideas for perennials to fill gaps between cornflowers and chives in a veg patch border, preferably pollinator-friendly, cottage-garden type plants. The border is about 30 cm wide and 150 cm long. The planting area is exposed, summers can get very hot (30 deg +), there’s also the potential for lots of rain. Any ideas off the tops of your heads, please? I’ll also pop out to the garden centre this afternoon and see what looks suitable. Thanks in advance for any ideas.