I would like to see a butterfly garden on one of the rooftops. We need more pollinators and butterflies are generally pollinators people are happy to have around.
This is an idea I've wanted to suggest for a long time but I'm about the worst person to write this because I'm talented at killing succulents. I'm not a gardener.
So here is the possibly wrong and bad copilot answer and some resources to jumpstart the process:
To create a butterfly garden, follow these steps:
Make a plan: Determine which butterfly species you want to attract.
Provide food: Adult butterflies rely on liquid food sources.
Create shelter: Site trees and shrubs to provide windbreak and rain protection.
Offer water: Create a butterfly puddle.
Keep it sunny: Butterflies prefer sunny spots.
Plant in drifts: Group plants together.
Go organic: Avoid using pesticides.
Even I can tell you the above is pretty bad because it doesn't list any actual PLANTS to use which should be a primary concern. Anyway, onto resources you could probably Google yourself: