1. A plant that is aged, mature, or has been growing for a long time
The ancient plant in the botanical garden is over 200 years old.
A planta antiga no jardim botânico tem mais de 200 anos.
2. A historical or heritage plant species, often rare or heirloom varieties
She collects seeds from old plants passed down through generations.
Ela coleciona sementes de plantas antigas transmitidas por gerações.
3. A building layout or architectural floor plan from a previous era
The architect studied the old plant of the colonial mansion.
O arquiteto estudou a planta antiga da mansão colonial.