Yeah...jumped on them quickly! They were $0.50 each. I couldn't believe it.
I hadn't though of caulk. I'll have to check on toxicity issues but that would work quickly.
Always looking for interesting plants for pollinators and food! Bonus points for highly, and pleasantly scented plants.
"Si hortum in bibliotheca habes, nihil deerit." [“If you have a garden and a library, you have everything you need.”] -- Marcus Tullius Cicero in Ad Familiares IX, 4, to Varro. 46 BCE