Creating a blockchain-themed outdoor plant box is a creative way to merge technology and nature. Here are the best plants to symbolize decentralization, security, and innovation:

1. Mint (Mentha) – A nod to cryptocurrency "minting," this fragrant herb thrives outdoors and adds freshness.

2. Chain of Hearts (Ceropegia woodii) – Its cascading vines resemble blockchain networks, perfect for hanging planters.

3. Spider Plant (Chlorophytum comosum) – Symbolizing interconnected nodes, it’s resilient and easy to grow.

4. Bamboo (Bambusoideae) – Represents strength and flexibility, much like blockchain’s adaptability.

5. Aloe Vera – A "secure" plant with healing properties, reflecting blockchain’s focus on security.

Pair these with geometric planters or LED accents for a futuristic touch. Happy crypto-gardening!